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| — | tutorials:t4 [2019/07/30 15:45] – [Axes] pwarczok |
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| | ===== T4: Graphical presentation and export of results ===== |
| |
| | //This tutorial was tested on\\ |
| | MatCalc version 6.01 rel 1.003\\ |
| | license: free\\ |
| | database: mc_fe.tdb// |
| | |
| | ==== Complimentary files ==== |
| | |
| | Click {{:tutorials:t4:script:t4_6021003.mcs|here}} to view the script for this tutorial. |
| | |
| | |
| | ==== Contents ==== |
| | |
| | * Creating a new graphical window |
| | * Introduction to the variables window |
| | * Modifying the appearance of a plot using 'options' |
| | * Zooming in and displaying x- and y-values |
| | * Exporting a plot as an image and as numerical data |
| | |
| | ===== Before starting...===== |
| | |
| | Open the file saved from [[tutorials:T3 | Tutorial 3]] and select the buffer named **'T=400 to 1600°C'**. |
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| | ===== Plotting a graph ===== |
| | |
| | To plot numerical results, it is first necessary to create a graphical window. In the **'View'** menu, click on **'Create new window'** or click on {{:tutorials:t4:img:icon_create_new_window.png| MatCalc create new window}} icon. |
| | |
| | {{:tutorials:t4:img:t4_view_menu_2013.png| MatCalc view menu}} |
| | |
| | In the **'Create new window'** box which appears, there is a list of a number of possible window types. Among these are **'(a5)'** and **'(a6)'**, which are the familiar **'phase summary'** and **'phase details'** windows automatically placed on the screen when a new workspace file is created.\\ |
| | Select type **'(p1) Plot core: XY-data'** and click on **'OK'** |
| | |
| | {{:tutorials:t4:img:t4_select_new_window_6011003.png|MatCalc select new window}} |
| | |
| | An empty plot with x- and y-axes appears on the screen. Locate the **'Variables'** window - if it is not present, right-click in the toolbar area at the top of the screen and select it from the menu, or click on {{:tutorials:t4:img:t4_quick_access_variables_2016.png?30|Variables icon}} icon in the **'Quick Access'** menu. Expand the **'favorites'** section by clicking on the small plus-sign to its left. Then, further expand the section labelled **'F$*'** to give the list shown below. |
| | |
| | {{:tutorials:t4:img:t4_variables_6001000.png| MatCalc variables}} |
| | |
| | The syntax **'F$BCC_A2'** means **'the phase fraction of BCC_A2'**, where the dollar sign is a separator between the variable **'F'** and the phase to which it applies **'BCC_A2'**. In the heading of the list, **'F$*'**, the asterisk is a wild-card indicating **'all phases'**. The meaning of the variable symbols can be found in the 'information on variables' part of the 'variables' window (see [[tutorials:T1 | Tutorial 1]]). Select **'F$*'**, drag it to the empty plot and drop it.\\ |
| | The plot should appear as shown below: |
| | |
| | {{:tutorials:t4:img:t4_plot_2016.png| MatCalc plot}} |
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| | |
| | ===== Changing the appearance of the plot ===== |
| | |
| | ==== Results from different buffers ==== |
| | |
| | The **'Options'** window can now be used to modify the appearance of the plot as required. (Again, if this is not currently shown, it can be made to appear by clicking on {{:tutorials:t4:img:t4_quick_access_options_2016.png?30| Options icon}} icon in the Quick Access menu or the right-click menu in the toolbar area.) |
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| | {{:tutorials:t4:img:t4_option_window_6001000.png| MatCalc options window}} |
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| | Firstly, note that there is a **'buffer'** drop-box. By selecting one of the other buffers, the contents of the plot can be changed. The **'default x-data'** option (the second line down in the options window) is set to StepValue, i.e. the value of the stepped variable used in the stepped equilibrium calculation.\\ Thus, on selecting the **'C=0 to 1.5 at 500°C'** buffer, the x-value changes to carbon content, and the plot looks like this: |
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| | {{:tutorials:t4:img:t4_plot_c-content_500_2016.png| MatCalc plot}} |
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| | and the plot for the **'C=0 to 1.5 at 800°C'** buffer looks like this: |
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| | {{:tutorials:t4:img:t4_plot_c-content_800_2016.png| MatCalc plot}} |
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| | |
| | ==== Changing the format of the temperature-step plot ==== |
| | |
| | Select the **'T=400 to 1600°C'** buffer from the buffer drop-box. One of the first things to note is that the x-axis data does not run from 400 to 1600; this is because the step value is expressed by default in Kelvin rather than in Celsius. To change this, double-click on the **'default x-data'** line. A box appears, entitled **'New value for 'default x-data''**. Enter **'T$C'** (temperature in Celsius) in place of **'StepValue'**. |
| | |
| | {{:tutorials:t4:img:t4_default_x-data_2015.png| MatCalc default x-data}} |
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| | The plot can be changed from colour to black-and-white (**'b/w'**) using the **'style sheet'** drop box. \\ |
| | The **'plots'** section of the options menu can be expanded by clicking on the white triangle. Below **'plot#0'** (the name of the current plot) is a list of options for this plot: |
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| | {{:tutorials:t4:img:t4_options_2_6001000.png| MatCalc options}} |
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| | ==== Title ==== |
| | |
| | This is blank by default. Double-click to enter a title, e.g. **'Phase fraction versus temperature for Fe-0.4 wt.%C'**. |
| | |
| | ==== Legend ==== |
| | |
| | This comprises options for the position of the legend and for the style of the box surrounding it. In field **'position'** change the setting to **'bottom'** |
| | |
| | {{:tutorials:t4:img:t4_option_legend_6001000.png| MatCalc legend}} |
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| | One might wonder, why the legend was shown from the start in the bottom, while the original setting was set to **'right'**. It is because the changes on the legend properties will be visible only when the 'use for all plots' setting at **'default x-axis'** is set to **'no'**. More information about the 'default x-axis' concept will be given in the [[tutorials:T5 | next tutorial]]. |
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| | {{:tutorials:t4:img:t4_default_x_axis_no_6001000.png| Default x-axis setting}} |
| | ==== Axes ==== |
| | |
| | The 'axes' section expands to give options for the **'x-axis'**, **'y-axis'**, **'2nd x-axis'** and **'2nd y-axis'** (the latter two are not used in the current plot). |
| | |
| | {{:tutorials:t4:img:t4_option_axes_6021003.png| MatCalc axes}} |
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| | Double-clicking on the **'title'** line for **x-axis** will bring up a box entitled **'New value for 'title':'**. Enter **'Temperature [°C]'**. In the same way, change the y-axis title to **'Phase fraction'**.\\ |
| | The axis type can be set to either linear or logarithmic. A linear scale is more suitable for the temperature axis, but a logarithmic y-axis enables the fractions of minor phases, such as cementite in this example, to be seen more clearly. Change **'lin'** to **'log'** for the y-axis.\\ |
| | The automatically assigned minimum y-value on the log-scale may not be appropriate, so if this is the case, double-click on **'scaling'** and replace **'auto'** with **'0.01..1'**. The two numbers are the lower and upper limits respectively. If one or other of these is missed off, an automatic value is assigned instead. (For example, using **'0.01..'** is sufficient to give a scale from 0.01 to 1, since 1 is the maximum value of F$*).\\ |
| | The changes on the x-axis properties will be visible only when the **'use for all plots'** setting at **'default x-axis'** is set to **'no'**. |
| | ==== Grid ==== |
| | |
| | This allows gridlines to be added to the plot, and their appearance to be modified. Change **'disabled'** to **'enabled'** for **'major-x'** and **'major-y'** to show major gridlines. |
| | |
| | {{:tutorials:t4:img:t4_option_grid_2013.png?| MatCalc grid}} |
| | |
| | ==== Series ==== |
| | |
| | Expanding the **'series'** section gives a list of options for each data-series. The name of the series (as it appears in the legend) can be changed using **'name'**. \\ |
| | The **'locked'** option, when set to **'yes'**, protects the series from any changes when the contents of the buffer are updated. A locked series is indicated by an asterisk by the name, if the automatic name is used.\\ |
| | **'Derivative'** can be used to display the numerically evaluated first or second derivative of a series.\\ |
| | The **'x-data'** and **'y-data'** options control which data-sets are displayed on the x- and y-axes. If the **'x-data'** is set to **'auto'**, the default x-data, as specified above, is used.\\ |
| | The appearance of the plots can be modified by setting **'default style'** to **'no'** rather than **'yes'**, and then expanding **'line'** and **'marker'** to give a list of options for colours, styles, sizes etc. |
| | |
| | {{:tutorials:t4:img:t4_options_series_2016.png| MatCalc series}} |
| | |
| | The image below gives an example of a modified plot. |
| | |
| | {{:tutorials:t4:img:t4_plot_modified_2016.png?650| MatCalc plot modified}} |
| | |
| | ===== Other plot operations ===== |
| | |
| | ==== Zooming areas of the plot ==== |
| | |
| | Left-click in the plot area and drag the mouse to draw a rectangular box. When the mouse button is released, an enlarged version of the region within the box is shown on the axes. Right-click anywhere in the plot area to return to the original scale. |
| | |
| | ==== Displaying x- and y-values ==== |
| | |
| | When moving the mouse pointer on the plot area, a black cross appears with the y- and x-values next to it. The coordinates of the centre of the cross are also shown on the **status bar** at the **bottom left of the screen**. A larger, red cross can be obtained by pressing the right mouse button. |
| | |
| | ==== Exporting data from the plot ==== |
| | |
| | Right-clicking in the plot window but outside the area of the plot itself gives a context menu as shown below. |
| | |
| | {{:tutorials:t4:img:t4_plot_context_2017.png| MatCalc plot context}} |
| | |
| | Clicking on **'Copy to clipboard'** allows to export this single plot or the whole frame (i.e. all plots in this window) in the **pixmap** (.bmp) or scalar vector graphics (**.svg**) format. Then the exported piece can be pasted to the relevant graphical application. Additional for the plot, there is a possibility to export the numerical **data** which will appear in the form of tab-separated columns after the paste operation.\\ |
| | Clicking on the **'Export to file'** will create the file containing the plot or the whole frame. The possible output file formats are **'.png'**, **'.svg'** and **'.pdf'** |
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| | |
| | ===== To finish... ===== |
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| | Save the workspace file. |
| | |
| | ===== Consecutive articles ===== |
| | |
| | The tutorial is continued in article [[tutorials:T5 | T5 - MatCalc built-in variables; graphical output]] |
| | |
| | Go to [[:tutorials|MatCalc tutorial index]]. |
