TELEMAC-MASCARET Forum: .xyz file display problem (1/2)

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TOPIC: .xyz file display problem

.xyz file display problem 3 months 2 weeks ago #45902

xuekaijiang OFFLINE Junior Boarder Posts: 52 Thank you received: 2	Hello! I have changed the attachment file from.csv to .xyz , and I have tried to drag it to a 2D view, but nothing shows up. My steps: File/Import/Comma Separated File/ACII new_wh.xyz Best Regards Attachments: ACIInew_wh.csv (493KB)
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.xyz file display problem 3 months 2 weeks ago #45904

a.barton OFFLINE Moderator Posts: 865 Thank you received: 204	Can't seem to download your attachment. Please try again? Kindly... Alan
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.xyz file display problem 3 months 2 weeks ago #45907

a.barton OFFLINE Moderator Posts: 865 Thank you received: 204	Did you try File > Open and then change the filter to "Point Sets (.pt2, .xyz, *.pcl)"? Kindly... Alan
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.xyz file display problem 3 months 2 weeks ago #45909

xuekaijiang OFFLINE Junior Boarder Posts: 52 Thank you received: 2	Followed your steps and problem sloved!! Thank you so much!!
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.xyz file display problem 1 month 2 weeks ago #46227

xuekaijiang
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Junior Boarder
Posts: 52
Thank you received: 2

Hey I'm trying to apply 2D interpolator on a bathymetric file(.xyz), now I can open the file correctly, but when I drag it into the 2D view, there are only 2 colors as shown below.

But when I finish the 2D interpolator function by Map Objects, the results seem fine?

I don't know if the 2 color shown bathymetric data will influence my following steps of establishing .slf and .cli file?

Thank you so much!

Attachments:

Picture1-8.png (371KB)

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.xyz file display problem 1 month 2 weeks ago #46228

a.barton OFFLINE Moderator Posts: 865 Thank you received: 204	Did you check the colour scale? Does it makes sense? Did you check some of the points in your loaded object? Do they make sense? Kindly... Alan
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.xyz file display problem 1 month 2 weeks ago #46229

Serrer OFFLINE Moderator Posts: 756 Thank you received: 312	Alan, Is it perhaps because the colourScale is computed without ignoring the NoDataValue?
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.xyz file display problem 1 month 2 weeks ago #46230

a.barton
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Posts: 865
Thank you received: 204

Is it perhaps because the colourScale is computed without ignoring the NoDataValue?

Martin, that seems like a possibility. It seems that Blue Kenue never asks if the data contains a NoDataValue while opening an .XYZ file... which seems like an oversight.

xuekaijiang, does your .XYZ file contain a value to indicate that there is NO value at some particular locations? That is... a number to indicate a missing value? (otherwise known as a NoDataValue by Martin)

Kindly... Alan

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.xyz file display problem 1 month 2 weeks ago #46231

a.barton OFFLINE Moderator Posts: 865 Thank you received: 204	While waiting for a response... I've added a new dialog to ask for an OPTIONAL :NoDataValue when loading an .XYZ file. The next installer created after 13 Feb 2025 will have this new feature. Kindly... Alan
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.xyz file display problem 1 month 2 weeks ago #46233

xuekaijiang OFFLINE Junior Boarder Posts: 52 Thank you received: 2	Hey , I checked my original .xyz fle. The z value of many points are not reasonable, and may be seen as invalid value? But I apply color bar to mseh before and after the .xyz projection, and I can see the difference of mesh elevations of different points.
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