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Questions tagged [average]

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16 views

Weighted averages: accounting for cell size

I'm a non-geographer using ArcMap 10.6. I have a similar question to the two asked here: Weighted averages: accounting for grid cell surface variation in proportion to the cosine of its latitude I ...
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1answer
35 views

Computing the harmonic mean of an image collection in the Google Earth Engine

How can I compute the harmonic instead of arithmetic mean for a series of images in Google Earth Engine? There is a build-in function to compute the arithmetic mean and median, but there is no ...
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10 views

Make a map using netCDF file

I need to plot a map which shows average precipitation for a long period, say 30 years, over a selected domain, using netCDF file. My question is how can I use a netCDF file and take an average of ...
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24 views

Dissolving GeoJSON with nodes and lines to one average line?

I have a GeoJSON with two layers. One with lines and one with nodes. I'd like to dissolve it (or at least the layer with the nodes) to one single line, by averaging the positions. I've looked at Turf....
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1answer
67 views

Calculating meshes average within boundary?

I have mesh data of elevations. Each mesh has a value of elevation (e.g. 87, 60, 33, ...). And I also have data of administrative boundaries. I want to calculate the average of each administrative ...
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27 views

Polygon interpolation neighbour average?

I am trying to estimate empty values based on a polygon layer we received from another study. Is there a way to calculate an average value for polygon A based on neighbours B,C, etc that border it? I ...
3
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1answer
122 views

Weighted Average of Band Based on another Band in Image Collection [Google Earth Engine]

Using monthly VIIRS data, I'm trying to estimate a weighted average of radiance where I want to weight by the number of cloud free days. Each image in the image collection has two bands: "avg_rad" ...
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1answer
164 views

GEE: apply ee.Reducer.mean to a list

After classification of an image in GEE, I got 2 lists of user's and producer's accuracies (1*7 and 7*1 dimensions). How can I calculate an average value for each of them now? print('Validation ...
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106 views

How to smooth a classified raster layer in QGIS?

In QGIS 3.0.2, I want to smooth a reclassified raster layer by r.neighbor tool. In this process I use average operation. The raster layer created from this tool is empty. I tested this process with ...