Questions tagged [maximum]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
2
votes
2answers
144 views

Getting maximum value of measured values ​every xx meters

I have huge CSV files from measurements (most of them are done by car), like this: measurement file The measurement system record one value every second and save this together with the GPS coordinates....
6
votes
1answer
95 views

Placing point over pixel with maximum value falling in grid overlay using QGIS

I have a raster layer with a Shapefile grid with cells measuring 3 x 3 m overlaid on top. All I want to do is find the pixel with the maximum value within each cell, and place a Shapefile point over ...
0
votes
1answer
48 views

Getting maximum distance for point features in the same point group

For each group I want to find the maximum point-to-point distance (and which of the id1 features participate in the max). For example, if I have the following attribute table: FID Long Lat id1 ...
0
votes
1answer
44 views

Showing only maximum values for each point

I have a dataset with concentrations of copper from different stations taken over several years. I would like to show only the highest concentration (mikromolar) for each station (STATN), and I tried ...
8
votes
3answers
507 views

Finding longest straight line within polygon in QGIS

I'm looking for an algorithm to draw max distance straight lines contained in a polygon (without crossing polygon boundaries). How can I perform it? As you can see some polygons are very oddly shaped. ...
0
votes
2answers
165 views

Google Earth Engine - Get Image with highest max Scene NDVI from a time period

I have a shapefile with several fields, corresponding to different wheat fields of a certain year. Using as Input an image collection converted to NDVIs, I would like to calculate the mean NDVI value ...
13
votes
4answers
2k views

Calculating the longest distance within polygon in QGIS

I want to calculate the "diameter" of polygons in QGIS. The "diameter" defined as the distance between the two most distant points of the polygon. I couldn't find a fitting solution in the field ...
0
votes
0answers
22 views

ArcGIS Maximum Likelyhood Classification Affine Error in Output?

I am running a Maximum Likelihood classification in Landsat8 data in ArcGIS 10.8. The classified output looks OK but it is affine shifted. The projection is the same as the input data, the layer also ...