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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Sample Design for Kriging

I am taking soil samples on an agricultural plot and will be using the results as input to create a semivariogram for kriging in ArcGIS. This plot features raised planting beds in which the test crop ...
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17 views

R: how to export my Kriging result to raster? [duplicate]

I want to export results of my Kriging calculation to raster or some other format. My aim is to take this converted file and intersect it with another SpatialPointDataFrame (location of the point ...
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1answer
66 views

Error in In predict.gstat in R

I am trying to do kriging by gstat pcakge through R. Here is my Code: krg<-krige(var ~ 1,data,grid,model=vgm,nmax=30) But each time I recive this warning: 1: In predict.gstat(g, newdata = ...
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1answer
49 views

Creating SpatialPolygons in R

I am trying to do kriging with my data. But there is a problem here. I want to use krige command in gstat package. But I do not have "Spatial object with prediction/simulation locations". How I can ...
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1answer
24 views

Geostatistical Wizard - Ordinary Kriging problem after export

I'm not sure qhat I'm making wrong. I used the geostatistical wizard to perform an ordinary kriging. The resulting Geostatistical Layer looks like this: After using the GA Layer To Grid Tool by ...
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1answer
72 views

R kriging in QGIS

I'm trying to work with the R Kriging script in QGIS (processing toolbox). I have installed R before directly to C:. I also have installed the packages raster, rgdal, sp and automap. When I'm starting ...
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30 views

How to interpolate (ordinary kriging) large files with QGIS processing

I'm using the Saga ordinary kriging tool as apart of different processing models. The biggest issue I have is the very slow performance. My point shape files have mostly more than 200.00 points (some ...
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29 views

Interpolating logarithimic values - groundwater pH

I am using Spatial Analyst to interpolate surfaces for several groundwater parameters based on point observations at monitoring bores, including groundwater level and pH. It suddenly occurred to me ...
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63 views

collocated cokriging with gstat in R

I am trying to perform cokriging with temperature as the target variable and elevation as a secondary variable. Elevation (the secondary variable) is collocated with temperature (the target variable) ...
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28 views

Creating pooled variogram in gstat

I am currently using gstat to perform ordinary kriging on daily fields of some variable - that is a new variogram is fit for every daily set of observations. I would like to compare this with ...
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1answer
36 views

How to create SpatialPixelsDataFrame from Latitude and Longitude data?

I have a data frame that contains latitude and longitude data with density point. I want to do kriging but my main problem is that I can not create SpatialPixelsDataFrame from my data. My data is ...
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1answer
53 views

Spatio-temporal kriging - useful if not interpolating to new time points?

I have data measuring a variable Z say at several locations on a fixed network (each location at a fixed longitude and latitude). values of Z are measured daily at the same time. At the moment I am ...
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74 views

How to change Raster Layer drawing shape using DotSpatial

I am using DotSpatial and geostatisticaltool in a application. I want to change Raster Layer drawing type after kriging. Here the example. This is a kriging result. It creates new layer and draws ...
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37 views

GRASS unable to download any extension from GRASS Addons

I'm trying to install some add-ons to GRASS, but each time I try to download an addon, I'm getting the same error: g.extension.py extension=v.autokrige ...
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60 views

How to backtransform the nugget,psill,range value obtained from ordinary kriging analysis of log-transformed dataset using gstat package?

I have a dataframe contains hourly PM10 concentrations of 83 measurement sites. Please download from HERE. Using this dataset, I have fitted a model with experimental variogram by ordinary kriging. In ...
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43 views

Choosing interpolation method for monthly atmospheric parameters derived from AQUA/Air satellite?

I want to investigate atmospheric refraction and i am using Aqua/ Airs satellite data. These are atmospheric parameters (1) Air temperature (2) Geopotential height (3) Relative Humidity All these ...
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11 views

Created raster with not expected range

I have created a raster layer with kriging tool as source of data have localized sapefile attached and shown in Figure. Why the value range and are produced raster information is irrelevant to the ...
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59 views

Geostatistical kriging

We use soil samples data for interpolating soil fertility parameters using ArcGIS geostatistical Kriging. While doing kriging, the resultant map values ranges are not matching with our input samples ...
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17 views

Kriging results in log mode and SpatialPointsDataFrame manipulation

I've a little problem, probably because I'm not fully expert with R data manipulation. I've perfomed a kriging elaboration of mydata, in log mode, as the classical meuse example, but how can I export ...
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2answers
262 views

Using kriging to extrapolate values outside of the sampling polygon

I have data points with values along 4 perpendicular transects. The kriging tool that I am currently using interpolates within the polygon created by the 4 transects, essentially a rectangle. I am ...
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72 views

Explaining different results from Ordinary Kriging and Universal Kriging?

When using either methods to create a surface from the same set of observations, these surfaces differ from each other. Visually it can be seen in the differences of the following contours ...
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1answer
165 views

Example of simple kriging with varying local means in R

I'm looking for an example of how to use simple kriging with varying local means in R. I've tried google, a few books (for example Aplied Spatial Data Analysis with R) and I've found almost nothing. ...
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1answer
96 views

Converting kriging grid to polygon?

I have an Excel file with coordinates and a measured value belonging to this coordinates. In ArcMap I can display the points and color it concerning the measured values. Since most of the values close ...
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2answers
213 views

Indicator Kriging and cokriging using ArcGIS Geostatistical Wizard?

I have a map of vegetation in 1913 for a particular landscape (approx 35,000ha), of which I have data for just short of 60% of the landscape. The limited visibility is due to the coverage being ...
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100 views

Interpreting Global Moran's I and should I krig?

I am trying to weigh up if kriging (or cokriging) the residual error from my model is a valid approach. My first step was to compute whether the error is spatially autocorrelated. I have done this ...
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1answer
128 views

Interpolation of categorical data from a polygon surface with gaps

I have built a vegetation map from a set of historical photographs from 1912. The photographs were taken from the ground (ridges and peaks of mountains), and I have developed a method of ...
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1answer
80 views

Variogram for data along linear routes

I have a dataset of some measurements along a bus route (image below). The purpose of my study is to be able to detect the values at any location along the route using Kriging interpolation. I have ...
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36 views

Interpolation method for independent and dependent variables, in ArcMap? [duplicate]

I'm relatively new to ArcMap, and I'm looking at the relationship between the internet and health outcomes. My dependent variables for my regression come from the Demographic & Health Survey (DHS) ...
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1answer
675 views

Plotting map resulted from kriging in R

I want to plot a map weighted by prices. I got a data frame of latitudes, longitudes and prices: > str(data) 'data.frame': 1253 obs. of 3 variables: $ lon : num 11.2 11.1 11 11 11.3 ... $ ...
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21 views

Weird interpolation “bug” - Arc Geostatistical kriging, lower bound > upper bound [duplicate]

I'm using the wizard in Geostatistical Analyst, ArcMap (10.0 I think) in order to run some simple kriging. Output is set to Prediction. I have two separate inputs, which have points at the exact same ...
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1answer
45 views

In jgrasstools kriging, what is the variogram model used when defaultVariogramMode = 0?

In jgrasstools 0.78, what are the variogram models corresponding to the values 0 and 1 of the defaultVariogramMode field? For mode 1, it seems to be a Gaussian variogram, by looking at the source. ...
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2answers
114 views

Measuring error of Spatial Analyst interpolation such as spline, nearest neighbor and kriging?

I am planing to use interpolation method using spatial analyst tool and I found several methods like spline NN and kriging. I know I can do interpolation using geostatistical analyst but some ...
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33 views

Keeping the z-statistic while kriging within ArcGIS Model Builder

I am creating a model that accepts in a .csv file and plots the XY points on a calculated field. The preferred interpolation method is kriging, and when I try to update the z-value field, the ...
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1answer
130 views

Getting range value from exponential variogram model

I am using vgm() from the gstat library in R: variogr <-vgm(sill,"Exp",range=range,nugget=0) output <-krige(...,model=variogr) As you can see I'm using fixed psill and range values. Before ...
2
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1answer
93 views

Problem with regression kriging using the krige command in r

I want to perform regression kriging in R using gstat. I have a SpatialPointsDataFrame which is of this form: After I have run my glm model, in order to see which variables are statistically ...
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89 views

Visualize smoke dispersion by interpolating point data [closed]

During the last weeks, I am trying to develop an application within my current working project, which aims to simulate smoke dispersion of fire incidents. Software used: ArcGIS for Desktop/Server ...
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1answer
163 views

Error executing kriging in modelbuilder: 'invalid output extent'

I'm doing an interpolation using kriging in Modelbuilder, my model is this: Every time I run the model it says: ERROR 010092: Invalid output extent. Failed to execute (Kriging). Why does this ...
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0answers
55 views

Cokriging using categorical covariables in ArcMap?

I am using cokriging to model a continuous variable across my study unit (soil carbon). I have one continuous covariable (soil moisture) but also a categorical covariable (vegetation community). I am ...
3
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2answers
519 views

Strange spatial interpolation results from ordinary kriging

I'm using Ordinary Kriging to interpolate a set of spatial data. I'm working on different sets which represent different days of measurement. I get good results, apart from one specific set. Will post ...
3
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2answers
214 views

Kriging values greater than the most extreme value of the input layer?

I'll admit I don't understand kriging to the fullest. Yet, I've read that the weights should add up to 1 as in IDW and Natural Neighbors. However, surrounding the biggest elevation points of my ...
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1answer
274 views

Unit of measurement from standard error prediction map

I am performing an ordinary kriging analysis and came out with the prediction standard error map. I would like to know the units of such map. Can anyone help me?
2
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78 views

Run kriging in ModelBuilder with various shapefiles

I need to run kriging in a model, using 5 different point shapefiles. I put as input %Name% to run the different shapefiles, but in Z value field I have an error, because it's different in each ...
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102 views

Error when kriging: “output variance prediction raster”

I am trying to run a python script for kriging, but keep getting a following error message. It doesn't make any sense as the output variance prediction raster is optional. The code: # Create ...
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0answers
114 views

Why is SAGA kriging slower in QGIS than in SAGA itself?

I'm using QGIS for a while. In my opinion the SAGA kriging tool (processing toolbox) is very slow. Is that an QGIS issue? I tried to interpolate a point layer with 300.000 points (I know it is big) ...
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103 views

Cross validation after kriging, in ArcGIS

I performed kriging interpolation using the kriging interpolation tool in ArcToolbox, not the Geostatistical Wizard method. However, how do I determine the cross validation without using the ...
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1answer
140 views

Setting lower and upper limits to classes in kriging interpolation, ArcGIS

I am using the kriging interpolation tool. I included two dummy values within my dataset:- an upper limit and a lower limit. I ran the tool in arc map 10.1 software. However, I want to change the ...
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50 views

Error of memory for vector allocation while kriging [duplicate]

When I run the krige.conv function from the geoR package in R: kc <- krige.conv(as.geo,loc=prd.loc,krige=krige.control(cov.pars=c(0.29,0.79))) it throws me the following error: Error: cannot ...
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1answer
94 views

Interpolate value at a specific point using kriging

Is it possible to interpolate the specific value at a point using the Kriging tool in the spatial analyst toolbox? If not, then, how can this be done in Arcgis? To my knowledge, Arcgis only produces ...
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237 views

Estimating parameters of a semivariogram?

I have got a shapefile of rain gauges with a field giving the precipitation amount in a particular day. I need to interpolate the precipitation values to obtain a precipitation map for a particular ...
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84 views

Kriging metal concentration with irregular set of sample points

I need to perform some interpolation to map a metal concentration around a platform. The distribution of my stations is not regular (see figure below where stations are the green points labelled with ...