[QGIS] CONVERT POINT/POLYGON TO RASTER | CREATE TIN | IDW INTERPOLATION | RASTER TO CONTOUR IN QGIS

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This video includes
conversion of point shape file (vector) to raster (DEM)
conversion of polygon to raster
Inverse Distance Weighted (IDW) Interpolation
TIN (Triangular Irregular Network)
Drawing contour from Raster (DEM)
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Опубликовано:

11 мар 2019

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Комментарии : 12

@carlostrindade2131 4 года назад

Thanks for the knowledge

@andreia4983 5 лет назад

How can you extract from a 2D raster automatically a contour like ring_road layer??

@JustLearnCivil 5 лет назад

The layer ring_road is already existing vector layer. If you wish to generate contour, you need to go to geoprocessing menu and there you will find extraction with two options - clip and contour. Select contour, the DEM (Raster, contour of which is to be found). And then you will get Contour from Raster.

@jelianreyes8953 3 года назад

how did you choose number of column and row?

@saulopote 4 года назад

I got such error during conversion from vector to raster: The following layers were not correctly generated. Any help?

@JustLearnCivil 4 года назад

Did you correctly project the layer?

@vamsik4246 3 года назад

1. try "fix geometries"- type it in search bar, 2. give the horizontal and vertical resolution values (dont keep zero)

@ronaldoleoni7170 4 года назад

When i try to convert, the raster archive stay in blank, any idea of what happening?

@vamsik4246 3 года назад

yah! mee too, I also got a blank raster, without any data. please help me, if you sorted this

@LUMIGOCHA 3 года назад

Had the same problem. I first projected the polygon shape (but nothing happened). Then, inside "Advanced Parameters" I changed "Output Data type" to "Int16" and it solved the blank raster problem. In my case the cell values range from 1 to 5, so you'll need to try different Data types if your values are smaller than 0 (or are decimal). Hope this helps a bit.

@vamsik4246 3 года назад

@@LUMIGOCHA yeah will try this..and will let you know if this works... thank you so much