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peptide
Canada
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 Posted - 07/08/2005 : 11:34:32 AM
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Origin Version (origin 7.5):
Operating System: xp pro
I have a timeseries dataset with thousands of points.How do i plot every tenth point, or every 20th point (for example)?
thanks
mark |
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Mike
USA
357 Posts |
Posted - 07/08/2005 : 11:58:11 AM
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Hi Mark,
Here are a couple of options for you (there are certainly others):
Plot your data, then manipulate the Speed Mode settings to reduce the number of plotted points. Speed Mode controls are found on the Size/Speed tab of the Plot Details dialog box (Format:Layer>Size/Speed). Find out more by looking up the Origin Help file topic The Graph: Customizing>Data Plots: General Tips>Speed Mode.
Use the LabTalk mod function in conjunction with the Analysis:Extract Worksheet Data menu command (worksheet is active) to extract every nth data point from your data set. For instance, the expression mod(i-1, 10)==0 would extract every 10th data point from your dataset (i = 1,11,21,31, etc.). You can find documentation on the mod function at Help:Programming index keyword = Mod( ) function.
Mike
OriginLab |
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Hideo Fujii
USA
1582 Posts |
Posted - 07/11/2005 : 10:40:20 AM
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Hi,
Another possibility is:
- Show the Plot Details dialog by Double-click your
plot, choose DropLines tab, and set the "Skip Points"
setting.
Here, I assume that you are plotting a scatter graph.
If you are making, say Line+Symbol, you can goto
the Line tab in the Plot Deatils, and set the
Draw Line Behind. This will connect points through the
X range though still invisible points are in effect.
OriginLab
Hideo Fujii
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how to plot every 10th point?