| T O P I C R E V I E W |
| consistory |
Posted - 09/26/2008 : 2:31:55 PM
Hi,
Is it possible to use a smooth colour gradient with no divisions, say red-green-blue, as a colour map? As opposed to having clear colour steps between the numerical limits in the colour map? I know this is easy to do in Matlab, for example.
Also, is it possible to use a colour map for a line's colour?
thanks. |
| 6 L A T E S T R E P L I E S (Newest First) |
| OndrejMM |
Posted - 01/20/2009 : 4:26:06 PM
Thank you Deanna,...
works well, Ondrej |
| Deanna |
Posted - 01/20/2009 : 02:32:04 AM
Hi OrderjMM,
The grouped line plots are usually colored by a color list. Origin ships with some built-in color lists, which can be loaded and applied. You may think these color lists include visible "steps" in color changes. Then, you can consider using palettes. It is easier to have gradient colors in palettes. Actually, Origin ships with a few built-in palettes that have gradient colors. We can try to use them.
Suppose you have already have your a group of line plots. The following steps will show you how to apply a built-in gradient palette.
1. Double-click on the plots to open the Plot Details dialog. Note that one of the line plot is selected in the left panel.
2. In the right panle, activate the Group tab. There is a table. A row of it says "Line Color". In this row,
click in the increment column. A drop-down list appears. Select Stretch with this drop-down list.
3. Still in this row, click in the Details column. A browse button appears. Click this browse button. This opens the Increment Editor dialog.
4. In the Increment Editor dialog, right-click on the color list. From the short-cut menu, select Load: Red.pal. This is a palette with gradient steps from black to red.
5. Click OK to close the Increment Editor and return to the Group tab of the Plot Details dialog.
6. Click OK to close the Plot Details dialog.
The is the result:
Instead of applying a built-in palette, you can also create your own palette and use it. In Step 4, there is an Open in Palette Editor option in the short-cut menu. This allows you to open the Palette Editor to edit the palette. This tool is especially handy for creating palettes with gradient colors.
The following screenshot shows the effect or a palette I have just created:
Deanna
OriginLab Technical Services |
| OndrejMM |
Posted - 01/19/2009 : 9:50:49 PM
Hi,
I assume that "consistory" wants to do something like the graph below,... yeh, I have the same question is it possible in Origin 8?
Thanks, Ondrej
 |
| easwar |
Posted - 09/29/2008 : 12:06:34 PM
Hi,
You can apply palette to only plots that have a color map, such as a contour plot, or a symbol plot that uses another column to determine color map.
Perhaps you are trying this on a grouped line plot? If yes, such a plot does not support color map currently.
Could you please send your OPJ to tech support so we can better understand the plot you are trying to make?
You can use this form to attach the OPJ to an e-mail to support.
http://www.originlab.com/www/company/qform.aspx?s=1&
Please mention this forum post in your reply.
As for smooth color gradient, on plots that do have color maps, you can increase the number of levels in the Plot Details dialog control, plus you can also turn off display of all contour lines to get a smoother look.
Easwar
OriginLab
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| consistory |
Posted - 09/29/2008 : 01:44:05 AM
Thank you Deanna!
I found the command, but it says "There is no colour map of this plot" even though there is a colour map being used in the current graph and layer. Any suggestions? |
| Deanna |
Posted - 09/27/2008 : 01:29:59 AM
Hi,
In Origin 8, you can control the color map by applying a pallete file. When a graph with color map is active, select Graph: Apply Palette to Color Map from the menu to open the tool. Please see whether this helps.
I am sorry that we can use gradient color to fill a line.
Deanna
OriginLab Technical Services |
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