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9.5.1.1 The (Plot Details) Color Map/Contours Tab


Video Image.png See more related video:Contour Plots and Color Mapping

The Plot Details dialog for Color Fill Surfaces, Contours, Image plots, and 2D plots using Color Indexing all have variants of a Color Map tab (called Color Map / Contours for Contour plots) that provide controls for customizing the levels, fill color, contour lines, contour labels, and fill methods, where applicable.

Contour
3D Surface
Matrix Contour 75pc.png
Matrix ColorMapSurface 75pc.png

Level, Fill, Line and Labels

Color Map Contours Tab 1.png
Level

Origin displays a default set of levels by finding the minimum and maximum values plotted in the matrix-based graph (Z values) or worksheet-based graph (column index values), then calculating an increment that creates eight color levels. Two additional levels are added to represent values less than the minimum and greater than the maximum value. Individual values may be edited in the list by double-clicking. You can also click the Level header to open the Set Levels dialog. Then you can edit the levels as a group.

Level is available in all the above plot types.

Fill

Origin defaults to using a color list that introduces Yellow and Green between limits of Red and Blue. Individual colors and Fill Patterns may be edited in the list by clicking, or you can click on the Fill header to open the Fill dialog, wherein you can edit the fill method and properties as a group.

Fill is available in all the above plot types.

Note: When the Fill color is linked to the palette, the individual color in the list is not editable. To modify the Fill color for individual level, you should double click Fill header and uncheck Link to Palette in Fill dialog.
Line

Each level of the Color Map may show a Contour Line. Individual Lines may be turned on or off and edited by clicking the row in the Line column, or by clicking on the Line header to open the Contour Lines dialog, wherein you can edit the Line properties as a group.

Line is available only for Contour plots.

Note: When Line is set to Show on Major Level Only, the individual line except the one that is on a major level is not editable. To show/hide the line for individual level, you should double click Line header and uncheck Show on Major Levels Only in Contour Lines dialog.
Labels

Each level of the Color Map may show a Contour Label. Individual Labels may be turned on by checking the box in the Labels column of the row, or by clicking on the Labels header to open the Contour Labels dialog, wherein you can specify whether to show or hide Labels as a group.

Labels is only available for Contour plots.

Note: When Lables is set to Show on Major Level Only, the individual label except the one that is on a major level cannot be turned on by checking the box. To show/hide contour label for individual level, you should double click Labels header and uncheck Show on Major Levels Only in Contour Labels dialog.

Editing levels

To edit a level value

In the Colormap/Contours tab of Plot Details dialog, double click on any cell in Level.... column to directly in-place edit the Level value. Values are restricted to those between the previous Level and next Level values.

To edit the full range of levels
  1. Right click on the plot, and select Colormap: Set Levels to open the Set Levels dialog.

or

  1. In the Colormap/Contours tab of the Plot Details dialog, click on the Level... heading to opens the Set Levels dialog box (see the following).
Color Map Contours Tab 2.png

To customize the minimum or maximum level

  1. Type the desired value into the associated text box.

or

  1. Click Find Min/Max to automatically set the From and To values, based on your data. Select a type for the scale. Please see details about the scale type here.

Additionally, you can set the interval between levels or you can specify the number of levels manually by setting the values of Major Levels and Minor Levels.

  • Major Levels: Set the absolute number of major levels shown in the color range.
  • Minor Levels: Specify the number of minor levels to display between adjacent major levels.

You also can set the First Level item to specify the value of the first major level.

Editing Fills

To edit the fill color for a level:
  • Click the color in the Fill column you wish to edit to open the Fill dialog.
Color Map Contours Tab new1.png
Color Map Contours Tab new2.png
Contour
3D Surface
To edit a range of fill colors:
  • Click the Fill header to open the Fill dialog, wherein you can edit all levels of the fill color
  • Select a contiguous range of values in the Level column (using the Ctrl key or Shift key), then click the Fill header to open the Fill dialog box.
Color Map Contours Tab 4.png
Note: When the Fill color is linked to the palette, neither the individual color nor the range of fill colors in the list is editable by clicking. To modify the Fill color, you should double click Fill header, and uncheck Link to Palette in Fill dialog.

Color Generation by Interpolation

Limited Mixing Select this radio button to select a minimum level fill color (From) and a maximum level fill color (To), and to fill the levels between these extremes with a linear mix of the two colors.
Introducing Other Colors in Mixing Select this radio button to have Origin automatically introduce complementary colors into the mix. This option provides fill colors that are more distinct than the ones provided by the Limited Mixing option.
Load Palette Load the palette and apply it to color fills. Click the Select Palette button, you can select one palette from the 40 built-in palettes. Besides, you also can browse the user-defined palette files by clicking More Palettes... in the palette list.
Link to Palette
Select this check box to link the color filling to the selected palette. It will disable editing the single color under the Fill column by clicking.
Flip Palette
Flip the order of colors in the selected palette and map it to the existed color level.
Stretch to Full Range
If this checkbox is checked, the colors in the palette will be repeated or skipped to n, where n is the number of color map levels in the input graph layer. If this checkbox is clear and n is less than 256, only the first n colors in the palette will be used. If the checkbox is clear and n is more than 256, the entire set of colors in the palette will be repeated as many times as needed.
From This is available only when either Limited Mixing or Introducing Other colors in Mixing is selected. Use it to specify the color for the minimum level.
To This is available only when either Limited Mixing or Introducing Other colors in Mixing is selected. Use it to specify the color for the maximum level.

Range

The Range group displays the range of levels that are affected by the current dialog box settings. To alter the range, you must close the dialog box and select the desired range from the Level column of the Color Map/Contours tab, and then click the Fill header again.

If you want to edit all the levels, make sure that no more than one level is selected from the Level column (or that all the levels are selected).

Pattern Generation

If you select a Pattern, you can also select a Pattern Color and Line Width.

  • If the pattern selections are of the same style (for example, Dense to Sparse), then the pattern is interpolated between the levels.
  • If the pattern selections are not of the same style, then the levels are split in half with the bottom half using the From style and the top half using the To style.
  • If only one pattern is defined (for example, the From pattern), then that pattern is used for all levels.

Editing Contour Lines

To edit individual Contour Lines:

You can click the row in the Line column to opens the Line dialog:

Color Map Contours Tab 5.png

Check or clear the Show check box to display or hide the line. When the box is checked, you can customize the line color, style, and width.

Note: When Line is set to Show on Major Level Only, the individual line except the one that is on a major level is not editable by clicking. To show/hide the line for individual level, you should double click Line header and uncheck Show on Major Levels Only in Contour Lines dialog.
To edit a range of Contour Lines :
  • Click the Line header to edit all levels of the contour lines. (Make sure that no more than one level is selected from the Level column. )

or

  • Select a contiguous range of values in the Level column (using the Ctrl key or Shift key), then click the Line header.
Color Map Contours Tab 6.png

You can then use the Contour Lines dialog box to edit that range of Contour Lines:

Color Map Contours Tab 7.png
Show Lines This section just active when editing all levels of the contour lines.
  • Show on Major Levels only
Show the lines only on the major levels and leave the minor levels out of account. When this box is checked, the radio buttons below will be inactive.
  • Keep Current
Maintain the current visibility of lines in the selected range.
  • Show All (Show Selected)
Display all contour lines in the range.
  • Hide All (Hide Selected)
Hide all contour lines in the range.
Line Properties
  • Link Line to Colormap Color
Contour Lines will match the colormap color at each level. This checkbox is only active when editing all levels of the contour lines.
If this checkbox is selected, the Color checkbox under Apply to All will be grayed out.
  • Apply to All (Apply to Selection)
Allow editing of the Color, Style and Width independently for all lines in the range.

Editing Display of Labels

Check boxes in the Labels column to control the display of level labels in your contour graph. To edit a range of Contour Labels :

  • Select a contiguous range of values in the Level column (using the Ctrl key or Shift key), then click the Labels header to open the Contour Labels dialog box.
Color Map Contours Tab 8.png
  • Select Keep Current to maintain your chosen Labels selections.
  • Select Show All (or Show Selected) to show all the contour labels within the range.
  • Select Hide All (or Hide Selected) to hide all the contour labels within the range.

Note: To manually add labels to your contour graph, right-click on a contour line at the location where you want a label and select Add Contour Label from the shortcut menu. To move a label along a contour line, drag the label to the desired location. Origin will only let you drop this label on a similar contour line.

Level Group

Use the buttons in the group to insert or delete levels.

To insert a level:

  1. Highlight the level that is directly below the level to be added.
  2. Click the Insert button in the Level group. Origin inserts a level value halfway between the selected level and the previous level.

To delete a level:

  1. Click on the level to select it and then click the Delete button in the Level group. When you delete a level, the other levels do not change.

Color Fill Control Group

  • For Color Mapped Surface plots, the Color Fill Control Group consists only of the Enabled check box. Unchecking this box turns the plot into a wire grid.
  • For contour graphs, the Enabled check box controls association of colors with levels. There are two methods for filling :
Matrix Color Fill Control.png
Matrix Contour Fill Control.png
XYZ Color Fill Control.png
Matrix/XYZ Surface
Matrix Contour
XYZ Contour

Color Fill Control Group for Matrix/XYZ Surface

  1. Enable Contours
    Show Contour lines on the surface.

Color Fill Control Group for Matrix Contour (also applies to Virtual Matrix).

  1. Fill to Contour Lines
    Uses the contour lines as a color fill boundary.
  2. Fill to Grid Lines
    Uses the grid lines as a color fill boundary.

Fill to Contour Lines uses linear interpolation of cell values to determine contour line placement and colors are filled to irregularly-drawn contour lines, using chosen color scale values. By contrast, Fill to Grid Lines treats each matrix cell as a discrete rectangle (or square), with a scale color assigned to each rectangle. Each has its applications and you have to determine which makes sense for your particular application.

Note: Origin's Heat Map graph type uses the Fill to Grid Lines setting. With this setting, each matrix cell is assigned a single color value from the chosen color scale. Further, cells or "blocks" are centered on ticks. Thus, a contour plot created from a 10 X 10 matrix might use axis scale values From 1 To 10, whereas a Heat Map produced from the same matrix would have scale values From 0.5 To 10.5.


Color Fill Control Group for XYZ Contour

  1. Color Fill
    Enable color fill for contour.
  2. Show Grid Lines
    Show the grid lines by connecting nearby data points as triangles.
  3. Show Data Points
    Show the data points, in XY coordinates.
Note:

The Color Fill Control group is not available for Image plots or 2D plots using Color Indexing.

Missing values Group

Under Missing values group, you can not only specify the threshold value for missing value in matrix, but also indicate the way to interpret values according to threshold value. By selecting the operators in drop-down list, you can assign values larger than/smaller than/equal to threshold value as missing value. This is in addition to an Origin Missing Value, which appears in a matrix as --.
For 2D contour, you can click the color box to choose a color and fill pattern. For 3D surface, this control is disabled.

Color Map Contours Tab 9.png

Colormap Theme Group

Use the buttons in the group to copy or save/load the color map settings specified in the Color Map table.

This group of buttons can copy or save all the settings specified in the Color Map table, including levels, fill colors, contour lines, and labels. You can select the Include Levels and Colors Only check box to copy/save settings in the Level and Fill columns only.


To copy color map settings from one plot to another:

  1. On the Colormap/Contours tab of the source plot, click the Copy button.
  2. Go to the Colormap/Contours tab of the destination plot. Click the Paste button.


To save color map settings as a graph theme:

  1. Click on the Save button. In the Save As dialog that opens, save the settings as a graph theme (*.oth file). The default location where themes are saved is /Theme/Graph in the the User Files folder.


To use an existing graph theme for color map settings:

  1. Click on the Load button. In the Open dialog, browse to select and load a graph theme.

Boundary

This group provides controls to customize the contour boundary, it is only available for contour graphs (either from XYZ or matrix). For XYZ contour plot, boundaries is defined in the Contouring Info tab, while for matrix contour, the data boundary is used.

Follow Contour Line

When this check box is selected, the contour boundary lines will follow the style of contour lines. Only when this is not selected, can one customize the boundary line style separately (i.e. all options below will be available).

Show

Specify whether to show the contour boundary lines. Only when this is selected, will the controls below be available.

Color

Specify the color of the boundary lines.

Style

Specify the line style from the drop-down list.

Width

Specify the line width, either type in the width value or select from the drop-down.

Rescale Mode

The Rescale Mode drop-down list allows you to control whether or not the levels that are established on the Color Map or Color Map/Contours tab will update if the current values change.

Normal

Origin automatically finds the minimum and maximum values in your data set, and then creates evenly sized levels and associated colors.

Manual

Current levels and associated colors set on the Color Map/Contours tab will remain fixed, independent of the range of your data set. To alter the levels and colors, you must edit the Level and Fill controls.

Fixed From

The minimum level remains unchanged, independent of the values in your data set.

Fixed To

The maximum level remains unchanged, independent of the values in your data set.

Transparency

To specify the transparency of the color filled surface move the slider or type a desired integer from 0 to 100 in the combination box. Note that 0 means the symbol is not transparent at all, and 100 means the symbol is fully transparent.

Workbook (Matrix) Button

Click the Workbook Button (if the raw data is a Matrix, this button will be a Matrix Button) at the bottom of the dialog, the Workbook/Matrix contains raw data will be opened. Besides, If the plot is made from a Virtual Matrix, then click Workbook button should open Virtual Matrix Manager with corresponding Virtual Matrix highlighted.

 

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