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I made a TIN interpolation of some height points but the resulting raster appears with some weird lines (like in the pic)enter image description here

What can i do to avoid this result?

enter image description here

Here are the input parameters. Sorry that my QGIS is set to Italian.

  • Can you post your data and a screen shot of your input parameters from QGIS?? – GBG Apr 10 '18 at 16:19
  • Click the drop down arrow at interpolation method and choose TIN - triangular irregular network. If itstill does not work, please share a sample of your data, so that I could try and reproduce the error on my PC. – alecsx Apr 11 '18 at 14:47
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Apparently this problem is related as your data is sorted.

I had the same problem with TIN interpolation and this was solved when I organized my xyz file as lon, lat, attribute, being the order of values organized by longitude (from -180 to 180 degrees)

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