@txalaparta can you clarify a couple of things about your data? Even better attached a small sample of the data. Attach your workspace as well if you can.
- is the CSV data a true Point Cloud or are the X/Y values unique and on a grid? i.e. are they a raster or point cloud
- about how many overlapping raster values do you expect? x|y|z||zraster2||zraster4| zrasterN. what is N?
- can you clarify the difference between 'common cells' and 'non common cells'?
Hello
is the CSV data a true Point Cloud or are the X/Y values unique and on a grid? i.e. are they a raster or point cloud:
- about how many overlapping raster values do you expect? x|y|z||zraster2||zraster4| zrasterN. what is N?
The input of the process is actually a zip file that wraps a number of geotiffs. How many? I can´t say in advance. N is the number of geotiffs in that zip file.
- can you clarify the difference between 'common cells' and 'non common cells'?:
Imagine that we have a DEM geotiff (single band) of Spain and a 2nd DEM with France.
Common cells are the ones of the border (Pyrenees) and Non-common cells are the cells that belong to one geotiff only.
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With the transformers below I obtain two csv files, one per each Country.
I have also managed to obtain a csv file for the Pyrennes (cells that are in both geotiffs). But it´s not what I need.
I need ONE file with ALL the cells in all files (remember that there could be many in the input zip) with the following format per line
x|y|z1|z2
if there is no value in x,y in the file that z will be empty
For example let´s suppose spainDEM.tif y the 1st geotiff and franceDEM.tif is the 2nd.
x|y||325 : when x,y is in Paris
x|y|578| : when x,y is in Madrid
Thank you in advance
Hi @txalaparta,
I think I have a solution that uses the RasterBandCombiner to create a raster with each input as a separate band, then extracts the points from that. We have to do a little work with BoundingBoxAccumulator and RasterMosaicker to make the input raster have the same extents, and the inputs must have the same spacing.
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The workspace currently assumes that the input files are Int32. If your inputs have a different interpretation, please change the NumericRasterizer to match.
tifftocsv.fmw