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HohenSt
Germany
1 Posts |
 Posted - 01/12/2018 : 12:51:56 PM
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Hello there!
I have a rather large (~300k points) data-file in xyz-format that I am trying to display in a contour plot. If I try this starting from the xyz-cloumn format, Origin simply crashes, so I tried converting to a matrix, at which point Origin can handle displaying the plot again.
However, I have one problem: the original data is skewed and the xyz-gridding interpolates missing data (outside the red lines in the attached graph), where none should be.
Is there a way to exclude the missing data points from the xyz gridding?
Kind regars, Stefan
Origin Pro2017G
Operating System: Windows10
Stefan Hohenberger |
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arstern
USA
237 Posts |
Posted - 01/12/2018 : 3:57:01 PM
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Hi,
Would it be possible for you to send us your project file with the data at tech@originlab.com?
Thanks
Aviel
OriginLab |
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arstern
USA
237 Posts |
Posted - 01/15/2018 : 1:28:53 PM
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Hi Stefan,
Thank you for sending the file. I was able to plot a contour plot with your x,y,z dataset in Origin 2017 SR2 and in Origin 2018. It is possible that there was some change from 2017 SR1 to SR2 that fixed this bug. Please try to update your version of Origin 2017 to Sr2 and/or download and install Origin 2018 demo version to test whether you can plot. https://www.originlab.com/demodownload.aspx
When I plot the contour plot by selecting col(G:I), the plot is automatically set to speed mode. The speed mode removes data points from the plot so that you can make edits quickly. When I unselect speed mode and edit the graph, the edits take about 5 minutes to apply. Speed mode when set to off is only necessary when making edits to the contour level/fill. When editing other features in the graph i.e. axis and color scale, keep the speed mode on. Even with speed mode on, when you export the graph, the graph will export as viewed with speed mode off.
https://www.originlab.com/doc/Quick-Help/control-speed-mode
See image: The contour plot was made from your x,y,z dataset in 2017 SR2.
Hope this helps,
Aviel
OriginLab |
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Ingnore missing points in XYZ-gridding?