Vector to grid - Computing statistics by grid cells

Asked Feb 05 '19 at 13:50

Active Feb 06 '19 at 08:10

Viewed 77 times

I have a vector point data from drifting buoys (speed, direction, sst, slp) that I want to analyse in a grid. What are the right tools for this?

Example of my points data below. Each point has the variables lat, long, date, time, SST, SLP, direction and velocity.

First I need to create a grid of the desired size (im thinking 1/4 degree)and then do basic statistics within each cell to create an overall picture. Basic stats would be a number of points in a cell, mean, max and min of the variables.

I tried to rasterize the vectors but can't figure out what the results are showing. I want to compute the means, max and mins for different variable in a cell. Any suggestions?

edited Feb 06 '19 at 08:10

asked Feb 05 '19 at 13:50

Lisse

Can you show us a piece of your data, please? Moreover, what are your requirement against the grid cells? – Taras Feb 05 '19 at 13:54
1

Additionally, you may read these threads Create grid where points is centroid? QGIS, QGIS - Create Grid - Create Fishnet and Summing data from a column in attribute table. – Taras Feb 05 '19 at 14:01
@Taras I added some pictures and a few more details. It should be relatively straight forward. Im quite now to QGIS but have seen this kind of analysis done before. – Lisse Feb 06 '19 at 08:12

Vector to grid - Computing statistics by grid cells

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