Questions tagged [kriging]
A group of geostatistical techniques to interpolate the value of a random field at an unobserved location from observations of its value at nearby locations.
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Minimum number of samples for kriging interpolation
I get some data with number of specimens with a request to interpolate it using kriging method.
After some investigation it appeared that kriging results (performed in ArcGIS Geostatistical Analyst ...
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Interpolating Maps - Statistical Learning Techniques vs Spatial Statistics Techniques
I have recently begun experimenting with the interpolation of variables over a whole country.
I have good sized training set where I have several dependent variables (continuous and categorical) ...
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Interpolated map using pca axes
I have done between group pca in R. I want to make an interpolated map using the eigen values of the first three pc axes.
I want to produce a map using each of the three pc axes and finally combine ...
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Produce raster map using universal kriging as interpolation method
I want to do kriging with external drift(universal kriging) in R. The covariate I use is in WGS84 refrence system. Because of nature of kriging which calculates distance in planar surface I have to do ...
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Spatio-temporal block kriging with R package gstat?
In the documentation of sp I saw that the coords argument of the SpatialPolygons function only accepts 2 columns. Is it not possible to create 3-dimensional polygons? I am doing spatio-temporal ...
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book/tutorial on using rpy2 in python for kriging?
I am proficient in Python, but have no knowledge of R. Can you suggest a good tutorial in using rpy2 or any other R library to perform Block/Cokriging "Kriging"
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Kriging with barriers in R?
I wonder if there is a way to interpolate xyz points in a raster within certain bounds using R? In ArcGIS this is called interpolation with barriers. I wonder if there is something similar in R? I ...
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Performing Ordinary Kriging in SAGA via QGIS SEXTANTE Plug-in?
I'm trying to learn how to apply the kriging analysis in QGIS using the SEXTANTE plug-in and SAGA tools. It appears that I have my SEXTANTE and SAGA folders configured properly according to the user ...
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How to install sda4pp plugin with missing repository in QGIS
I see that the repository for the sda4pp plugin went down in 2011. Does anyone know if there is another way to download the plug-in with the repository missing?
If this plug-in is no longer ...
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Converting point data into gridded dataframe for histogram analysis using R?
I am very new at using GIS data and only modestly experienced with R. I've been reading about how to analyze spatial data using the spatial-analyst.net PDF book, so I'm not completely lost, but I ...
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SDA4PP not found? How to do Kriging in QGIS?
I need to make kriging analysis in QGIS (v1.7.4). I found out, that it should be a part of SDA4PP plugin, but I just couldn't find it in any repository (even third party). It looks, like it just ...
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How do I implement 'weighted' kriging in R? [closed]
I'm trying to interpolate the values of an attribute (called "disease_rate") that i've sampled at a set of spatial points and i'd like to add 'weights' to the resulting kriging estimates.
Basically, ...
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Installing SDA4PP plugin for Kriging in QGIS
I am trying to do kriging in QGIS. I have loaded the SDA4PP plug in.
Almost all of the items in the SDA4PP dropdown menu are not highlighted and are unresponsive when clicked on - including the ...
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Generic comparison for kriging in geoR and ArcGIS
I am going to do a project based on kriging. The targeted area would be as big as United States and my grid would be 10km*10km. I am wondering the differences of efficiencies for the methods ...
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How can I generate and publish raster images?
I have several hundred groups of data points (in lat/lng format). I want to generate heat maps for each group using kriging or similar interpolations and then display the generated raster images on a ...
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Ordinary kriging tools available in ArcGIS?
I have been using Geosoft's Target to interpolate X, Y coordinates then use them to create grids using ordinary kriging.
I am now working with ArcGIS which I am new to and can't seem to be able to ...
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How to grid unevenly sampled categorical data?
I am looking for a method for gridding categorical data. I have extracted from nautical charts and field sheets a collection of points specifying the nature of the surface of the bottom of the ocean. ...
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Are special interpolation techniques required for weather data?
I've downloaded a series of weather observations from the local weather agency - it comprises around 1,000 points spread non-uniformly across Australia, with a greater density of points located near ...
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Using kriging with data in GDB
I have series of data in my GDB
I am running the program under VBA and what I want to do is using the data by the tool Kriging.
This is what I thought:
First, Kriging needs data that must be a ...
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Using ArcGIS API interpolation functions (idw, kriging, splines) in my own dataset?
Does ArcGIS API provide interpolation functions, like if I want to interpolate from my own set of values?
I know that ArcGIS provides functions for interpolation like IDW, Spline and Kriging etc, ...
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Kriging with barriers in ArcGIS Desktop?
I am trying to do interpolation in a coastal area with data points in several rivers emptying into a bay and on opposite sides of peninsulas.
I have created a coastline layer to use it as a barrier ...
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Kriging on GRASS+R - cannot allocate vector of size 146.5 Mb
I'm trying to do a groundwater elevation map with an Ordinary Kriging on R, but always resulting on the lack of memory
cannot allocate vector of size 146.5 Mb
allocation (windows xp 32bit). ...
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Open source methods for kriging?
I have a point dataset which I'd like to Krige, ideally using an open-source software package. If possible, I'd also like to choose the semi-variogram model during the process to improve the ...
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