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inRente
Germany
1 Posts |
 Posted - 05/23/2019 : 05:06:55 AM
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Origin Ver. and Service Release (Select Help-->About Origin): 9.6.0.172 (Academic)
Operating System: Windows 10
Hey guys,
while creating a heatmap, I ran into the following problem:
The scaling of the heatmap, which is used to show fold-differences of values in a dataset, is currently set from values of 0 to 2. This is done so that the middle value (1) is displayed as a neutral colour (white), and values from 0 to 1 are represented as shades of blue, while values from 1 to 2 are displayed as shades of red. However, there are some values in the dataset that are larger than 2 (e.g. 4 or 7), which are currently all being displayed as the same shade of red (setting for values >2).
Is there a way to set up the scaling so that a value of 1 is always displayed as a neutral colour, while the min. value is set as 0 and the max. value is set as the largest value in the dataset? |
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Chris D
428 Posts |
Posted - 05/23/2019 : 09:51:12 AM
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Hi,
Open the Plot Details dialog and, with the plot selected in the dialog, navigate to the "Colormap" tab.
In that tab, you will find a table of Levels and Fill colors.
You can click on the pencil icon in the Level column to pop open a dialog to configure the number of levels you want.
Then, back in the Level column in the table on the Colomap tab, you can manually type over the values in the various levels to specify a color for a certain interval.
Find what you consider the neutral color and set it to 1.
Also pay attention to the < and > values.
you will have to experiment a bit to understand the process and get the results you want because there is no super-easy way to do what you want.
I hope this helps.
Thanks,
Chris Drozdowski
Originlab Technical Support
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Heatmap Scaling