MagicPlot Manual

Plotting and nonlinear fitting software

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colormap [Wed Jun 29 12:59:02 2016]
Alexander
colormap [Thu Jan 14 17:17:50 2021] (current)
Alexander
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-====== Color Map Plots (Pro edition only) ======+====== Color Map Plots ======
  
-To create a Color Map Plot, open the Table with matrix data, open a context menu and select ''Create Figure'' -> ''Color Map'' item or use ''Create Figure'' button on the Toolbar. Color Map Plots are available in Pro edition only.+To create a Color Map Plot, open the Table with matrix data, open a context menu and select ''Create Figure'' -> ''Color Map'' item or use ''Create Figure'' button on the Toolbar.
  
 Selection in the table is ignored, the whole table is used for plotting matrix. Selection in the table is ignored, the whole table is used for plotting matrix.
- 
-MagicPlot Student edition cannot create Color Map Plots but these plots can be edited in the Student edition if you open a project file which was created in the Pro edition. 
  
 {{::create-color-map.png?nolink|Creating Color Map Plot}} {{::create-color-map.png?nolink|Creating Color Map Plot}}
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 {{::palette-dialog.png?nolink|}} {{::palette-dialog.png?nolink|}}
 +
 +The buttons below the color table are:
 +
 +  * **Insert Before** -- inserts a new line before the current selection. The default color and data level values for the new line are calculated as the average of the values from the previous and the next lines.
 +  * **Remove** -- removes selected lines from table.
 +  * **Distribute Evenly** -- evenly distributes levels and colors in selected lines or in the whole table if less then 3 lines are selected.
 +  * **Invert Sequence** -- inverts the sequence of colors; the new data levels are calculated as 1-L where L is the initial level value.
  
 ===== Color Map Palette Presets ===== ===== Color Map Palette Presets =====
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 Custom presets are saved in files with the .mppc extension. You can open the folder which contains custom preset files using the 'Menu' button. Use the 'Reload Presets List' menu item after adding new files in the presets folder. Custom presets are saved in files with the .mppc extension. You can open the folder which contains custom preset files using the 'Menu' button. Use the 'Reload Presets List' menu item after adding new files in the presets folder.
 +
 +===== Get More Palette Presets =====
 +
 +More palette presets can be found on this page: [[palettes]]
  
 ===== Creating Palette from Color List ===== ===== Creating Palette from Color List =====
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 ===== Technical notes ===== ===== Technical notes =====
  
-==== Exporting of Vector Image ====+==== Exporting of Vector Image ====
  
 MagicPlot renders the Color Map Plot as a high-resolution raster image which is included into the vector image file (EPS, PDF, SVG, EMF). Therefore the file size does not depend on the data matrix dimensions. The resolution of the Color Map image is set by the DPI value in the 'Canvas' tab of the Figure properties dialog. MagicPlot renders the Color Map Plot as a high-resolution raster image which is included into the vector image file (EPS, PDF, SVG, EMF). Therefore the file size does not depend on the data matrix dimensions. The resolution of the Color Map image is set by the DPI value in the 'Canvas' tab of the Figure properties dialog.
  
 The Postscript (EPS) and EMF image format does not support the transparency in the color maps. The Postscript (EPS) and EMF image format does not support the transparency in the color maps.
 +
 +==== Palette Colors Storage ====
 +
 +MagicPlot store palette colors as 4 floating-point numbers (Red, Green, Blue, Opacity). Note that even if color components are represented in 0...255 range, the fractional digits still make sense if smooth color interpolation is selected.
  
 ==== Color Interpolation ==== ==== Color Interpolation ====
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 MagicPlot supports 3 color map spatial interpolation modes: off (nearest neighbor), bilinear and bicubic.  MagicPlot supports 3 color map spatial interpolation modes: off (nearest neighbor), bilinear and bicubic. 
  
-MagicPlot performs the bicubic interpolation using the [[wp>cubic Hermite spline]]. For uniform (equally spaced) x or y values this method is equal to the conventional bicubic interpolation algorithm (which is widely used for the image resizing) with the coefficient ''a=-0.5''.+MagicPlot performs the bicubic interpolation using the [[wp>cubic Hermite spline]]. For uniform (equally spaced) x or y values this method is equal to the conventional [[wp>bicubic interpolation]] algorithm (which is widely used for the image resizing) with the coefficient ''a=-0.5''. 
 + 
 +===== See Also ===== 
 + 
 +  * [[palettes]]
colormap.1467194342.txt.gz · Last modified: Wed Jun 29 12:59:33 2016 (external edit)