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zizrjb
United Kingdom
3 Posts |
 Posted - 10/10/2013 : 06:35:54 AM
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Origin Ver. 8.5.1 and Service Release SR2
Operating System: Win 7
Dear All,
I have a line graph and I want to add a few symbols on the line to distinguish it from other graphs. I don't want it to change it to line+symbol as I have tens of thousands data points. I just want to add say 5 or 10 data symbols on the graph (equally separated). I know for sure other softwares do this. Hope this makes sense.
Regards,
ziz rjb |
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Hideo Fujii
USA
1582 Posts |
Posted - 10/10/2013 : 10:31:06 AM
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Hi ziz rjb,
There is a "Data Points Display Control" in the "Drop Lines" tab in Plot Details dialog (at each plot level). You can change the plot type to "Line+Symbol" from "Line" at the bottom left of Plot Details, then choose "Drop Lines" tab. You can turn ON the check box of the "Skip Points", and specify the number of skipping points.
--Hideo Fujii
OriginLab |
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zizrjb
United Kingdom
3 Posts |
Posted - 10/10/2013 : 10:49:16 AM
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Hi Hideo Fujii,
Thanks for the reply. This won't work as skipping the data points will delete the line in between and will end up with a scatter plot!
Regards,
ziz rjb |
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Hideo Fujii
USA
1582 Posts |
Posted - 10/10/2013 : 11:49:07 AM
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Hi,
Please try to turn OFF the check box of "Gap to Symbol" for the Symbol/Line Interface in the "Line" tab in the Plot Details dialog.
It should connect the lines as before.
--Hideo Fujii
OriginLab |
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zizrjb
United Kingdom
3 Posts |
Posted - 10/10/2013 : 12:03:03 PM
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Thanks Hideo Fujii. This solves the problem for now.
It would be ideal if we can specify the exact number of symbols to show rather than the skipped data points as some of the graphs have different data points. May be it would be included in the next versions of Origin.
Regards,
ziz rjb
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greg
USA
1378 Posts |
Posted - 10/10/2013 : 4:43:51 PM
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Two solutions come to mind:
(1) Plot your data twice in the layer. Once as a Line plot and again as a Symbol plot. In Plot Details, for the Symbol plot, on the Drop Lines tab, check the Skip Points box and choose a value. You can try values and use the Apply button to see the effect.
(2) Plot your data as a Line+Symbol plot. Then use the following script to set the Symbol size to zero and then set special points to whatever size you like:
set %C -z 0; // Set Symbol Size to 0
get %C -e size; // Get the size of the dataset
// Now loop over the dataset and get 10 evenly spaced points
for(idx = 1 ; idx <= size ; idx += nint(size/10))
{
set %C idx -z 15; // Set these special points to 15pt size
}
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Specific number of data points to have symbols