While it is not currently possible to automatically choose different fill colors for a floating bar chart based on whether the difference between Y1 and Y2 is positive or negative, it is still possible to accomplish the desired result by following the steps below.
- Click File | Open.
- Select your data file and click Open.
- Click Data Tools | Data | Transform.
- In the Transform dialog, assuming you just have three columns for X, Y1, and Y2, enter the below Transform equation where D is the column the results:
D = IF(B>C,"Red","Blue") - Click OK. This will enter the color name Red in column D where B (Y1) is greater than C (Y2), and it will enter the color name Blue if C (Y2) is greater than B (Y1). Any predefined colors can be used in this equation. To use a custom color, see the article Rearrange or Add Custom Colors to the Color Presets Menu in Grapher.
- If desired, enter "y1>y2" into the column D header.
- If your project file will be saved as a GRF file rather than a GPJ file, save this data file now to the same (File | Save) or a new (File | Save As) name.
- Highlight columns A-C and click Home | New Graph | Bar | Vertical Floating Bar Chart.
- Select the floating bar plot in the Object Manager.
- On the Fill page in the Property Manager, click in the Color variable column and select Column D or the appropriate column from step 5.
Please contact us if you would like to add your vote for this feature to our suggestion file.
Updated July 2019
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