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Questions tagged [geostatistical-analyst]

Geostatistical Analyst is an ArcGIS for desktop extension, that provides a suite of tools for spatial data exploration and surface generation.

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Which is the model semivariogram for binary data?

I have a binary data (1,0) to calculate spatial distribution of soil bacteria. I have to use indicator kriging (presence/absence) and fitting model of semivariogram. Then, which is the model ...
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Finding closest anticorrelated polygon or automate what is learned in semivariogram?

I am trying to do spatial autocorrelation of sorts based on a layer of polygons of mean rainfall data. I want to see how rainfall deviates from a certain point on the landscape. Essentially, I want to ...
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Which geostatistical tools to use to determine surface changes over 40 years?

I have a data from the Weather station with SWEmax (snow water equivalent) collected over 40 years. I need to interpolate the data over my river's watershed and then, somehow, determine the ...
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How to create a surface area that interpolates and visualizes trends in physical activity in ArcGIS?

I have a dataset that contains several hundred telemetry points for my focal species around twilight hours. Attached to these points are mean values that represent how active the animal was 10 ...
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kriging of compositional data (grain size)

I have posted this already in the GEONet Forum but without any suggestions, now I am hoping for some feedback here: I have a problem concerning interpolation of compositional data of grain sizes. I ...
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Using convex hull for interpolation of individual plots or lump plots together in ArcMap?

This question is inspired by Using kriging to extrapolate values outside of sampling polygon in ArcMap? I'm working on a project trying to understand the lasting effects of historic scientific ...
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Rule of Thumb for setting smoothing parameter

I'm trying to model some binary data (disease infections) using indicator kriging in the Geostatistical Wizard in Arc 10.3. For presentation purposes I'm using the smoothing option. Is there a rule of ...
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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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Cross-validation error threshold in ArcGIS

I'm learning the Geostatistical Wizard toolset in ArcMap 10.4.1 and I am performing the cross-validation step in an IDW interpolation. I have done some research regarding the process of cross-...
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Land cover generation

I am working on a river watershed on QGIS and I need a land cover map. I have a good raster of land use data with 15 m resolution for year 2015, but it covers around the 90 % of the basin. I have ...
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Understanding semivariogram model in ArcGIS; difference between Binned points and Average points?

I am sorry if I am unaware of some very basic ideas of semivariogram. I am trying to understand the difference between binned points and averaged points. In this [document] (http://desktop.arcgis.com/...
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Calculate spatial GINI coefficient for land use

I am interested in calculating an index of agricultural land inequality for Brazil. I'm thinking that a GINI coefficient would be a good approach given traditional uses of GINI. I have a data set for ...
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Verifying time-invariance for spatial gradients of air pollution?

I have data from a network of NO2 passive samplers. Measurement are repeated in the same positions in different years. I need to verify if spatial gradients in air pollution remain constant in time, ...
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Simulating random field with power law distribution using ArcGIS Desktop?

As far as I know, there are a lot of methods developed for simulating 2D random field with Gaussian distribution, such as geostatistical method, Fourier transform, etc. But a lot of geoscientific ...
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Value changes while converting Geostatistical layer to grid using ArcGIS Geostatistical Analyst?

I'm trying to export the GA layer (krigging interpolated temperature data) to raster. While converting, the data range is getting changed in the resultant raster (max and min) as indicated in the ...