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Generating sampling points with RivEX
RivEX can generate sampling points on your river network using a variety of techniques. You could use this tool to generate points at national or catchment level for developing habitat, water quality or even geomorphological surveys. The current tool can generate points snapped to the network by:
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Sampling every polyline in the network
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Stepping along the network using a user defined distance
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Random points (a set number or as a % of the network)
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Stratified sampling using a grid (samples a set number within each grid cell)
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Stratified sampling using a user supplied polygon layer
Random sampling,10% of network with a 1000m footprint
More advice about sampling is given in the manual.