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GeomagDataDrawer

Stand-alone plotting tool for data diagrams / Автономный инструмент для построения диаграмм данных

Geomag data drawer: complete user guide

ƒ  Nicolay B. aka RD_AAOW, Соля́ников Я.; 17.08.2024; 1:33

Contents

1. General information

Geomag data drawer is a software tool designed to build diagrams based on tabular data. It was originally created as a means of visualizing the results of experimental measurements; can still be used for this purpose.

Geomag data drawer supports the following data formats:

In terms of data visualization and processing, Geomag data drawer provides the following main features:

Implementation as a standalone application, support for all basic features for editing, building and designing diagrams, flexible settings system, bilingual interface, as well as the ability to store data in its own format eliminates the need to install additional software systems. Therefore, Geomag data drawer can be considered a very useful tool for processing and visualizing tabular data.

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2. Main app interface

The main window of the app is shown in the figure below.

The main elements of the window:

▶ The diagram display field.

▶ List field of added curves and objects (selection of an arbitrary set of points for simultaneous adjustment is available; see below).

▶ Buttons for adding () and deleting () curves and additional objects.

▶ Button for hide / show () curves and objects.

▶ Diagram options panel, which allows you to customize your own display settings for selected curves and objects. Namely:

　▷ in what range of abscissas and ordinates should the curve be drawn, and whether transposition is required (tab );

　▷ how to position the image of curve and/or object on the sheet, and what size it should be (tab );

　▷ whether it is necessary to manually set the location of the diagram captions and the title of the figure, or the app should set them automatically (tab );

　▷ how to display the coordinate axes of the diagram (tab );

　▷ how to display the coordinate grid of the diagram (tab );

　▷ how to display diagram labels (tab );

　▷ how to display the lines of curves on the diagram (tab );

▶ App menu (see section “App menu”).

 

The main window of the app during operation is shown in the figure below:

All changes made by user in the diagram parameters field are immediately reflected in the diagram in relation to those curves and graphical objects that are marked in the list of curves and objects and highlighted in gray in the diagram field. The set of editable curves and objects can be arbitrary. Adding to the editable group is performed in the same way as selecting a group of files in Windows Explorer, i.e. using left mouse button and [Ctrl] and [Shift] keys. Thus, the user can fine-tune parameters quickly and efficiently.

Each control in the parameter field, tabs, as well as app menu items are provided with hints. To call them, it’s enough to hold the cursor over any element for two seconds. If there is no movement, the tooltip is displayed for 30 seconds.

The app supports the function of an operating system “Open with...”. If loading is successful, the app immediately starts working with the specified file.

It’s also possible to automatically build curves when loading a file (if its content allows). To do this, the app creates a standard template file GeomagDataDrawer.txt (if it doesn’t already exist), similar to the one used in the parametric curves addition function. The user can change it at will by creating different preview styles. This allows you to speed up the search for the desired data file, focusing on the image of the diagram, and not on its tabular representation (similar to viewing photos).

The app has an ability to move around the plotting area. To do this, you can use scroll bars, as well as mouse pointer. In the latter case, you need to left-click in any part of the area and move pointer in the direction in which you want to move the diagram, then release the button (similar to movement of a hand when moving a large sheet of paper).

The size of plotting area, and, accordingly, the size of saved image of the diagram is determined by the location of images of curves and objects. Its lower right corner coincides with the lower right corner of an edge curve image. Accordingly, to increase the plotting area, it’s necessary to move this image further to the right and/or down.

Finally, if work on the diagram hasn’t been completed, all data and settings can be saved to the app’s own file format, and then restored at the next start. This function is duplicated by the function of autosave (when closed) and auto-recovery (when opened) of the app state.

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2.1. Adding a curve or object to a diagram

To add a new curve or graphical object to the diagram, click the button next to the list of curves and objects. A hotkey is available for this function, see section “App menu” of this guide. This will open the addition options window:

When adding a curve, you’ll need to specify which column from the loaded data file will be the abscissa column and which will be the ordinate column. When adding an object, you’ll need to select its type (in the current version – line (4 types), rectangle, ellipse or text label). The number of curves and objects in the diagram should not exceed the maximum allowed (see section “Limits and default parameter values” of this guide).

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2.2. Removing curves and objects from diagram

Using the button, you can remove curves and/or objects from the diagram. This will require user confirmation. User can select multiple curves and objects in the list to delete at the same time. A hotkey is available for this function; see section “App menu” of this guide.

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2.3. Hide / show curves and objects

Using the button, user can temporarily hide the selected curves and objects (the button will then be “released”). If necessary, they can be displayed again at any time (the button will be “pressed”).

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2.4. Selection of curves and objects

The middle mouse button allows you to select curves and objects for customization with the mouse. To do this, press the button and (holding it) select the area in which the required curves and objects are located in the diagram plotting field. All diagram elements affected by the rectangular selection area will be highlighted in the list of added curves and objects.

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2.5. Selection of a range for plotting a curve or line

Settings on this and all subsequent tabs apply to all curves selected (highlighted) in the curve list. Some functions will be unavailable when working with graphic objects

The content of the tab is shown in the figure below:

Plotting ranges are calculated automatically when loading each curve in accordance with its real boundaries. Moreover, the boundaries are rounded up to the first significant figure on the left. Despite this, they can be changed manually by user at his discretion. From this tab, the transposition of the curve is also available, i.e. exchange of abscissas with ordinates in places.

Note that range boundaries aren’t required to respect the max ≥ min rule. In particular, the coordinate plane can be “reflected” horizontally, vertically, or in both directions at once. This can be done both manually and using and buttons, which will correspond to the rotation of the axes abscissa and ordinate, respectively. However, the transposition option remains available. All this allows you to increase the flexibility and informativeness of the diagram, depending on the needs of a particular study.

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2.6. Setting the location and size of curve or object

The content of the tab is shown in the figure below:

The image size of an individual curve or object and its offset are limited by the maximum sheet size (see section “Limits and default parameter values” of this guide). But due to the ability to move around the plotting area and its rather large size, the app allows you to build and place a large number of curves on the diagram in the required way.

Using the appropriate buttons, you can arrange the selected curves and objects in a row or column. The app will automatically calculate the corresponding coordinates for the selected images.

App also has the ability to set the location of the image of each element of the diagram using mouse:

The new parameter values are transferred to the corresponding fields of the diagram settings. Therefore, the restrictions on this function are the same as on the corresponding fields.

In relation to graphical objects, the offset fields determine their location on the diagram, and the size fields set the size of rectangles, ellipses, and line display fields. Field sizes for text labels are calculated automatically.

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2.7. Setting the caption of curve image

The content of the tab is shown in the figure below:

When you select automatically set captions and their location, all other fields become inaccessible, and the corresponding parameters are calculated automatically by the app. Axis labels are placed next to the axes inside the coordinate plane. Image captions are arranged so that when several curves are superimposed, captions are in one line with spaces between them. The caption itself, as well as the name of the curve in the list, is taken either from the data file, or is formed by the app using serial numbering.

When you select manually set captions, the values calculated by the app are substituted into the parameter fields. In the following, they’re limited only by size of the curve image. Note that the diagram label field in this tab only applies to the first of selected curves if there are several of them selected.

As applied to the “Text label” graphical object, the label field sets the text of the label itself. The behavior of the object doesn’t depend on the state of the “Autodetect” checkbox.

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2.8. Setting coordinate axes of curve image

The content of the tab is shown in the figure below:

Using the appropriate fields, you can set the number of main and additional divisions on the diagram axes, the thickness of axes in pixels, as well as their color and relative position, specify the format for displaying numbers (normal or exponential).

You can also select auto-detection for the number of divisions. In this case, the number of serifs is chosen as the most appropriate for the given plotting range.

All parameters (here and below) have valid ranges; you can find them in the section “Limits and default parameter values” of this guide. The color of axes is adjusted by pressing the colored button next to the corresponding inscription. The button has a color corresponding to the last selected axis color.

Axes can be forced to the left (top), center (middle) or bottom (right), or their location can be determined automatically. In the latter case, app will set the axis to the intersection with the zero of the other axis or align it to the side to which the zero is closer.

The “×” button hereinafter is intended to disable the display of a particular element. This, in fact, means setting a white color for it, which is interpreted by the app as transparent and is not displayed when redrawing. Specifying white for the axes, grid, and labels will have the same effect.

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2.9. Setting the grid of curve image

The content of the tab is shown in the figure below:

Using the appropriate fields, you can set thickness of the grid lines, as well as colors of the main and additional lines. The grid line colors default to match the background (white), so the grid is not visible. When “turning on” the grid, its lines are rebuilt in accordance with location of the notches on the axes. The “×” button or setting the line color to white hides the grid.

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2.10. Customizing fonts and colors for captions

The content of the tab is shown in the figure below:

The tab allows you to configure the display style of the image caption, labels of the curve axes and the “Text line” graphic object. The font selection buttons call up a standard window for selecting a font, its size and style. Colored buttons allow you to set the colors of the labels.

The app doesn’t allow the use of some fonts. If the user selects an inappropriate font, the app notifies him about this and offers to choose another one.

Setting the captions color to white disables them.

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2.11. Set curve line style

The content of the tab is shown in the figure below:

The tab allows you to configure the thickness of curve line or the “Line” graphic object, its color and display style, as well as the marker used. By style we mean one of three options for representing a curve:

If the style expects to display markers, the marker selection field becomes available; otherwise it is blocked. The list of available markers consists of two parts:

Additional markers are obtained by the app from images in .png format, stored in the Markers directory, located in the same directory as the app. If this directory doesn’t exist, it will be created automatically. If the directory contains images in .png format, app loads as markers only those that are available, intact and of the appropriate size (see section “Limits and default parameter values” of this guide). Successfully loaded markers are available under numbers 7, 8 and beyond.

It should be noted that app converts loaded images in a special way. More precisely:

This feature allows you to use almost any image as markers without much modification. Additional markers aren’t included in the standard package of the app.

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3. App menu

The main menu is represented by items described below. In parentheses are “hot keys” that can be used to call up the corresponding menu.

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3.1. “File”

3.1.1. “Open data file”

Calls up a standard file open window. The ability to add curves and objects appears immediately after confirming the selection of a data file, if it’s available and has the correct format. If an error occurs during loading, the user receives a corresponding message, and the app again displays the last successfully loaded diagram.

If the user selected a Geomag data drawer (.gdd) file that already contained settings for displaying curves and graphical objects, their last state will be displayed in the diagram field. If you use a template to automatically add curves to your diagram, they will also be displayed when you load the data file. In all other cases, work begins with an empty field in the diagram. But in any case, the file must contain at least two lines and at least two columns of data.

The app explicitly sets the maximum allowed number of columns and rows of data (see section “Limits and default parameter values” of this guide). Columns and rows of data that are out of range are ignored during loading.

When choosing the option to extract data from a text file, the user will first need to specify the expected number of columns of data.

This value may be specified with a margin if the exact number of columns is unknown. All missing values will be replaced with zeros. For more information about data extraction, see section “File format specifications” of this guide.

When opening any file (except .gdd), the user will also be required to specify the number of lines in the file that will be used to look up the data column names.

The specified number of lines will be considered by the app exactly as text: the data from these lines will be ignored. This value must be specified accurately, because a smaller value will cause an error (the text will appear where the data should be), and a larger value will lead to the loss of part of the data and incorrect display of column names.

The data column labels extracted from the data file are used to mark and label curves in the app. If column names couldn’t be read (in particular, if the number of expected columns during data extraction turned out to be more or less than the actual number of columns), the app names them in the order of reading: c.1, c.2, etc.

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3.1.2. “Load from clipboard”

The menu item allows you to use text data on the clipboard copied from another app to create a diagram. This will prompt the user to specify the expected number of columns and number of rows to search for column names.

All unsaved data is lost if the user agrees to the corresponding warning

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3.1.3. “Save data file”

The app can save loaded data to files of all types that it supports (except .xls and .xlsx). If saving occurs with an error, user is notified about this. Data column names can also be saved if the appropriate option is selected in the app settings. It should be noted that saving graphic objects is only possible in the app’s own format (.gdd).

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3.1.4. “Save diagram”

Calls up a window of options for forming the final diagram image.

The user is offered the following saving options:

The “Save” button opens a standard save window; the “Cancel” button aborts the operation.

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3.1.5. “Close diagram”

The menu closes the current diagram and returns the app to its initial state. Settings fields and menu items related to saving are blocked.

All unsaved data is lost if the user agrees to the corresponding warning

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3.1.6. “Generate curves”

Calls up a window that allows you to set analytical functions and data generation range.

User can specify the functions whose tabular representation needs to be calculated and specify the plotting range. If errors are detected when composing a function, explanatory messages are displayed below the function input field. The correctness of the function setting is checked by pressing the “+” button or the [Enter] key; the function is added to the list of tested functions. The number of curves you can add is limited (see section “Limits and default parameter values” of this guide). Range correctness is checked when you click “OK” button.

The “OK” button starts generation and transfers data for drawing to the main app window. After this, all main menu functions become available. The “Cancel” button returns the app to its previous state.

All unsaved data is lost if the user agrees to the corresponding warning

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3.1.7. “Extract from image”

Calls up a window that allows you to extract data from image. Before it user should select an image file for extraction.

User can use left and right mouse buttons to specify the ends of the control line segment. The line that the resulting segment overlaps will be used to extract color information, which in turn will serve as the source of data for plotting the diagram.

All unsaved data is lost if the user agrees to the corresponding warning

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3.1.8. “Settings”

Calls up the app settings window.

The user can:

The “Save” button causes the app configuration to be updated; the “Cancel” button allows you to leave the settings window without changing them.

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3.1.9. “Exit”

Allows you to exit the app. Depending on the settings, exit may be accompanied by saving the diagram state and a request to exit. In this case, the app saves the size and position of the main window; they are restored at the next startup.

All unsaved data is lost if the user agrees to the corresponding warning

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3.2. “Operations”

3.2.1. “Add curve or object”

The menu item performs functions similar to those described in clause 2.1 of this guide.

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3.2.2. “Parametric curves addition”

If you need to quickly add several diagrams of the same type and also quickly arrange them on a sheet, you can use the parametric addition of curves. Using the corresponding dialog box, you can specify the numbers of data columns, the dimensions of each image and its position, as well as its caption.

If you need to add several diagrams at once, you can use the option to load parameters from a file. For this purpose, the user can create a text document, the lines of which are formed according to the rules specified in the dialog box, and load it by clicking the “File” button. In addition, a file suitable for this function can be created using the corresponding menu item.

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3.2.3. “Select curve’s data columns”

The menu item allows you to change the data columns used to plot the selected curve. This will open a window similar to the one that is called up when simply adding a curve. Here you will need to indicate which column from the data file will be the new abscissa column, and which will be the ordinate column in the selected relation. This option can be useful if you need to quickly create a new curve in place of an existing one, using the style settings and the location of the latter.

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3.2.4. “Merge curves or objects”

The menu item allows you to combine two curves, i.e. place them on top of each other and optionally set common axes. The function requires that exactly two curves be selected before calling it; otherwise the alignment will not be performed.

The curve alignment parameters window is shown in the figure below.

User can specify where the alignment result should be placed at which of the curves. You can also choose which axis is shared between two curves, and whether to set the color of the axis labels and curve labels to the color of the curve itself to enhance the visualization of the diagram.

When combining, the common axes of the curves are assigned the same parameters (maximum and minimum values, number of ticks, and location), and different axes are placed along the edges of the curve image. The dimensions of the curve images, the value of the curve transposition parameter, and the axes parameters also become common; placement of curve labels is performed automatically.

This function can also be applied to graphic objects, if necessary. Please note that the procedure is not irreversible, because it just changes the location and display styles of curves on the diagram.

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3.2.5. “Remove curves or objects”

The menu item performs functions similar to those described in clause 2.2 of this guide.

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3.2.6. “Edit diagram data”

The menu item opens a window for editing diagram data:

This option may work slowly and freeze the app interface for a while when called. This is due to the peculiarities of the editor’s operating mechanisms and is not a failure or error

The data in the table is presented as it was obtained from the data file. To edit each individual value, simply select the corresponding cell and press the [F2] key or double-click it. Fractional values should be entered with the decimal separator specified in the OS settings. Not-a-number values (line breaks) should be entered as NaN (case-sensitive).

User is notified of all errors when filling out table cells either immediately when trying to leave the cell, or when trying to save the changes made.

You can also edit data column names. To do this, just double-click on the header of the column whose name you want to change.

The following operations are available for the table itself:

The “Save changes” button, if correct, applies the changes made to the diagram data and initiates its redrawing. The “Cancel changes” button returns the diagram to its original state.

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3.2.7. “Load style”

Calls up a standard file opening window, allowing you to select the desired display style for selected curves and objects. If a .gds style file is not available, it’s not loaded; if the file is damaged, it’s loaded as best as possible.

Next, user is asked to choose how to interpret the loaded style:

Style files aren’t included in the standard package of the application.

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3.2.8. “Save style”

Calls up the standard file save window, allowing you to select the desired location and name for the new style file. All parameters are saved to the file in the state in which they were at the time of selecting this menu item in relation to all currently selected curves and objects. This allows you to create both styles for displaying individual dependencies, as well as styles for representing groups of data files of the same format.

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3.2.9. “Reset style”

The menu item returns all style parameters of all selected curves and objects, except for plotting range, to standard values (see section “Limits and default parameter values” of this guide).

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3.2.10. “Save curves addition template”

Allows you to save a template for adding curves to a diagram, which can then be used in a function of parametric curves addition. The file records the basic parameters for all curves added to the diagram at the time the option is called.

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3.2.11. “Replace preview template”

Allows you to save the template for adding curves to a diagram as the default one. After this operation is completed, all new data files that don’t contain their own display styles will be displayed according to the newly specified template.

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3.2.12. “Restore preview template”

Allows you to restore the standard template for adding curves (the first eight curves, four in a line).

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3.3. “Additional”

3.3.1. “Merge data tables”

This feature allows you to combine data tables of different types into a single file. For example, if you have the following files:

  A B
1 1 1
2 4 5
3 6 7

  C D E
1 8 9 4
3 2 3 2

based on them, you can obtain the following summary tables: without restoring gaps

  A B C D E
1 1 1 8 9 4
3 6 7 2 3 2

and with the restoration of gaps

  A B C D E
1 1 1 8 9 4
2 4 5 0 0 0
3 6 7 2 3 2

The result will depend on the selected settings.

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3.3.2. “Create vector image”

This tool allows you to generate a vector image (SVG or EMF) using a script file with customizable parameters for curves, axes and text labels. A description of the script format can be found here or by saving a sample from the window of this function.

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3.4. “Help”

3.4.1. “About / Help”

The menu item allows you to call up this user manual, as well as access other projects and resources of the Laboratory.

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The menu item allows you to select the language of captions and tooltips of the app interface. The language changes immediately, without restarting the app, and is then saved in the app configuration.

The following languages are available in the current version:

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3.4.3. “Associate files”

The menu item allows you to set the app as the default one for opening .gdd files and block .gds style files from manual editing. Thanks to this, diagram files can be opened by double-clicking, without having to entering the app separately.

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4. Hardware and software requirements and app contents

4.1. App contents

The standard package of the app includes the following files:

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4.2. Files and directories

The app can create the following files and directories:

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4.3. Supported file formats

The app supports following formats:

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4.4. Support for Microsoft Office Excel formats

Support for Microsoft Office Excel ’97 and ’07 table files is performed using the ExcelDataReader library (ExcelDataReader.dll and ExcelDataReader.DataSet.dll, version 3.6) and an auxiliary library that provides file archiving functionality to support the MS Excel ’07 format (library ICSharpCode.SharpZipLib.dll, version 0.86.0.518).

Both libraries are distributed under the MIT license through the nuget system. Below is its text (original).

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the «Software»), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

  1. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. The software is provided «as is», without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.

App can work without these libraries, but loading of files .xls and .xlsx will be unavailable.

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4.5. Working with the app from the command line

Options for using the app from the command line:

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5. Limits and default parameter values

All values are specified only for this version of the app. An asterisk marks parameters whose restrictions and values are recalculated taking into account the scale when saving the final image

Parameter Minimum Maximum Default value
Data rows quantity 2 10001 —
Data columns quantity 2 100 —
Quantity of curves on the diagram 0 20 —
Quantity of graphic object on the diagram 0 50 —
Quantity of primary notches on Ox axe 1 100 Autodetection
Quantity of secondary notches on Ox axe 1 10 2
Quantity of primary notches on Oy axe 1 100 Autodetection
Quantity of secondary notches on Oy axe 1 10 2
Width of axes / notches, px* 1 10 1
Color of axes / notches — — Black
Placement of Ox axe — — Auto
Placement of Oy axe — — Auto
Format of numbers on Ox axe — — Generic
Format of numbers on Oy axe — — Generic
Width of grid lines, px* 1 10 1
Color of primary grid lines — — White (background)
Color of secondary grid lines — — White (background)
Width of curve’s caption 0 200 —
Font of curve’s caption — — Arial
Font size of curve’s caption* 4 36 9
Style of curve’s caption — — Default
Color of curve’s caption — — Black
Font of axe’s caption — — Arial
Font size of axe’s caption* 4 36 8
Style of axe’s caption — — Default
Color of axe’s caption — — Color
Width of curve’s line, px* 1 10 1
Style of curve — — Line without markers
Curve’s marker 1 6 + number of successfully loaded marker images 1 (square)
Size of image of additional marker, px 3 × 3 17 × 17 —
Dimensions of image of single curve, size of the diagram area, size of the saved image, px* 100 × 100 10000 × 10000 500 × 500
Offset the curve image from the top left edge of the diagram, px* (0, 0) (9900, 9900) (0, 0)
Scale of the saved image 1,0 10,0 1,0

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6. File format specifications

6.1. Geomag data drawer files

The .gdd format specification is not currently available for publication. It’s not recommended to make changes to Geomag data drawer data files yourself to avoid data loss.

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6.2. Microsoft Office Excel data files

A .xls or .xlsx file must contain one table. Empty fields, gaps and other elements will be replaced with zeros. The table must be located on the first sheet of the file. Text explanations are allowed in the first lines of the file. You can use formulas without dependencies that require running Microsoft Office Excel to resolve. You can use sheet formatting.

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6.3. Data files in Windows CSV format

The same number of numeric values are required across the lines of the .csv file. The number of captions must match the number of data columns, otherwise they will be ignored. Values must be separated by semicolons (;) in any number, but not less than one. The decimal character can be a period (.) or a comma (,). When saving a file, the app uses a comma. Conventional and exponential representation of numbers with and without fractional parts (with symbols E and e) is allowed. Paragraphs and extraneous characters will be replaced with null values.

Example file contents in Windows CSV format:

Col.1;Col.2;Col.3
1;10;40,9
2;20,1;4.39e-01
3;0,9;4,33E-1

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6.4. Files to extract data from

The characters 0 – 9, -, Latin e and E, . and , are considered elements of numeric values. All other characters are used as delimiters. Sets of valid characters that aren’t numbers are interpreted as null values. Zero values also replace missing values in rows if, when loading the file, the number of columns exceeding those available in the file was specified.

If a line has no numeric values, it is ignored. If the line contains at least one valid character, it is loaded by the app. Therefore, before loading the file, it’s strongly recommended to remove any lines from it that could be interpreted in this way, or use the option to search for column names. Otherwise, the diagram may display incorrect (from the point of view of its meaning) readings, and the range of its plotting, calculated taking into account such data, may differ greatly from the expected one.

Example of file contents and its interpretation:

Initial data Data after removing delimiters Result
1 10 40.9 1 10 40.9 1,0; 10,0; 40,9
abcde1 1*0 40,9 e1 1 0 40,9 0,0; 1,0; 0,0; 40,9
-10 +40.9 -4,9e-1 -10 40.9 -4,9e-1 -10,0; 40,9; -0,49

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