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Questions tagged [correlation]

A measure of the degree of linear association among a pair of variables.

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Exploring the association between two variables on QGIS

I am doing a project on primate electrocutions. I have primate population density data - in the form of point data for each troop, and in the attribute table I have the total number of monkeys for ...
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38 views

minimum number of pixel points for regression on atmospherically corrected satellite images

I am performing atmospheric correction on a Landsat 8 image using different methods to check which one works best (in order to proceed with further/subsequent analysis). Wondering if it's okay to use ...
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250 views

Comparing/Correlating NDVI Rasters with other index Raster

So, I've created two rasters. One for NDVI and one for another index for surface water from the same orthorectified World-View 2 image. I can visually see how the indexes are inversely proportional. ...
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Classify / section line or group of points according to shape (with shapely objects)

Is there any python module/function that classifies/sections a shapely line according to the shape the line forms? If not, I could do it with the positions of the points that form the line. I would ...
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129 views

How to test for correlation between two point data sets

I want to determine if there is a correlation between weed plant species density and habitation (buildings). Both data sets are points. The weed species has an 'abundance value' (i.e., one point may ...
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705 views

R-Studio0.99, How to compute correlation between two rasters and serial correlation

I am using R.Studio0.99 version installed on my HP Laptop 4th generation (8GB RAM) windows 8 operating system and I know how to use R studio and some of the library to incorporate spatial data (raster,...
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68 views

Choosing the range of the correlogram with an irregularly shaped area

I am doing correlograms (Moran's I) between 125 plots. Those plots are located in large patches in my study area (see figure). The entire study area is approximately 2000 x 2000 m. I know that the ...
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1answer
20 views

How to select one band in image using rasterio

I have two different images and I want to select one specifi band from each one of them and calculate regression between them. Each one of those bands is a result of calculation I did (in the first ...
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Creating scatter plot between to images in QGIS,ENVI or GEE

I have two images , for each one I have created new calculated band. Now I want to create scatter plot and to create statistic for the correlation between the values of those two bands for those ...
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1answer
58 views

Preparing raster Image for correlation in ENVI 5.5

I am working with two raster image of the same location with the same extent, both projected to the same coordinate system and having the same cell size. I want to correlate the raster value on the ...
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2answers
493 views

Correlation between raster pixels within each polygon

I have two raster layers with the same extent, CRS, and resolution, and a shapefile consisting of a number of polygons. I would like to calculate the Pearson correlation between the two rasters within ...
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422 views

How do I statistically compare two maps?

I need to statistically compare two maps in order to determine if the spatial distribution of the data is correlated or not. I have two files in ArcGIS XY location of foreign-owned firms XY location ...