The Heat Map Color Scale tool is used to define a color scale for the heat map representation. Each heat map view has its own color scale. This tool is not visible by default, to show it:
Make sure you are in view mode by clicking on View in the mode tab.
Select→ from the menu.
When you move the cursor over the color band, the corresponding value is shown in the box below the color band. If the Adjust boundaries after calculations box is checked, the values of the boundaries of the color scale are automatically modified to fit the boundaries of the regression surface. This will ensure that the color scale is always adapted to the variations observed in the regression surface, but will modify the meaning of each color after a new calculation.
Over the color scale band, you will notice small triangles. Each triangle is a symbol for a control point. Control points are fixed a couple of value and color. The other colors are linearly interpolated to and from the bounding control points. Control points can be moved, edited, deleted and added as explained below.
To change the value associated with a control point:
Select the control point you want to change by clicking on the triangle. A double triangle will appear to show that the control point is actually selected.
Now while clicking on the control point, move it to a new position.
The same color is now associated to a different value.
You can also directly type a value in the input box and press Enter to validate.
To change the color associated with a control point:
Double click on a control point triangle. The color selection dialog will show up.
In the Select Color dialog, pick up a different color.
Click on thebutton
The control point value is now associated with your new color.
To delete a control point:
Select the control point.
Press the Delete key on the keyboard. Be careful, the control point will be deleted without asking confirmation.
The scale is automatically updated to reflect your change.
You can also delete a control point by selectingfrom the contextual menu that appears with a mouse click over the control point.
To add a new control point for a given value:
Make sure no control point is selected (click anywhere but on a triangle to unselect a control point)
When you move around the band, notice the variations of the values in the box below the band.
Double click in the band, where you want to add a new control point. The color selection dialog will show up.
You can also add a control point by selectingfrom the contextual menu that appears with a mouse click over the desired position.
Select a color and press
You can modify the boundaries of the color scale. For instance, to decrease the minimum:
Grab the color scale by pressing on a left end of the band and keep pressing.
While pressing, move the cursor to the right. Notice how the minimum value is modified and how the overall scale is shifted as you move. When the minimum value has reached the value you expect, release the mouse.
You can also type directly the minimum and maximum values in the appropriate fields at both ends of the scale, and validate with Enter