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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QGIS SAGA Kriging tools not working with my data

I've been trying to create surfaces using Kriging from the geochemical sample data points I have, using SAGA ordinary kriging. But the tool doesn’t work. Most of my data points have 50m*100m spacing. ...
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Performing empirical bayesian kriging in R

I am trying to apply empirical bayesian kriging in R, but I cannot find a package that provides a function for EBK. Does anyone know of any or should I use ArcGIS?
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Assign single SPEI value for each city

I want to have a single value of SPEI to every city of my map. As the SPEI data is gridded at 0.5 degree resolution, some cities o not have a point falling into its boundaries. My approach was to &...
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Understanding Universal Kriging results

The results obtained using the Universal Kriging method with 41 data points appear as shown in the graph. I would like to inquire about the reasons behind the occurrence of the sawtooth pattern in the ...
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Minimum datapoints for Kriging

Are the datapoints (34) for this Kriging operation sufficient? Research Gate recommends > 30. [both -> here and here], while another source [-> here] mentions 30 to 50. All mention Webster ...
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Using data for interpolation in Geostatistical Wizard of ArcGIS Pro

i do have soil temperature data (5 cm depth) from 1991 and 2021 for Germany, and wanted to interpolate the data for each year as a class of 3 seasonal months (winter = 12, 1, 2; summer = 6, 7, 8). ...
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Clip a SpatialGrid using a SpatialPolygon

In order to perform kriging methods using automap::autoKrige I need to provide a SpatialGrid for which values can be predicted. I would like to reduce the rectangular grid to the actual area (in this ...
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Improving kriging results from transect data

I have estimates of fish density along transects from a lake and would like to extrapolate these estimates for the entire lake surface, using kriging methods. Based on information from here, here and ...
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What does ArcGIS Kriging use lag size for, if semivariogram model (range, sill, nugget) are prespecified

Using the Kriging tool in ArcMap I'm a bit confused on the meaning of parameters. The interface asks for lag size, and optionally range, partial sill and nugget. My understanding is that lag size is ...
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Unexpected artifacts when creating a digital terrain model (DTM) using lidR and gstat libraries in R

I'm using the lidR, raster, sp, and gstat libraries in R to create a Digital Terrain Model (DTM) from LiDAR data. I'm encountering unexpected artifacts in my DTM and I'm unsure why. Here is my code: ...
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Kriging - spatial autocorrelation analysis

I'm reading a paper, where semivariogram analysis was done using kriging to calculate spatial autocorrelation of building hights. The paper says: As can be seen from Figure 3, the building in the ...
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RMSE in interpolation

I am doing interpolation for a chemical concentration in loamy soil across a very large arable land. I used simple kriging, IDW and EBK. The data distribution was skewed so I had RMSE of close 100 for ...
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Generate simulations using variogram with given mean and standard deviation

I am trying to generate simulations using variogram using the R code below library(sp) library(gstat) library(ggplot2) library(tidyverse) library(dplyr) library(reshape2) # Call data points <- ...
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Interpolate underwater quality data with QGIS as with Surfer with Kriging method [closed]

I'm trying to interpolate conductivity data form a coastal area about 4-6 square km from a series of 10-20 probe wells more or less equally distributed. I have access to a licensed Surfer and to QGIS ...
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Doing Empirical Bayesian Kriging from point data and then exporting as raster in ArcMap/ArcGIS Pro

I have an Excel file with temperature data at 21 different stations. I import it as XY data in ArcMap and then import a shapefile of the area. All points are within the area shapefile. I run ...
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Kriging: extract data for other unknown points

I have one month of data that I converted to STDFDF. #set the spatial location of the regions Data.loc <- data.frame(Stat = c("Firmo","Citta dei Ragazzi", "Rende", ...
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SAGA GIS - regression kriging

I have a problem with regression kriging in SAGA under QGIS. It gives me an error - could not execute the tool. I want to create temperature maps from data set of meteorologic station and DEM. I have ...
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Exporting voxel sections to raster in ArcGIS Pro [closed]

I need to perform some algebra in voxel sections resulting from EBK 3D (NetCDF file). I need to calculate a mean section and standard deviation, and to do that I need to export the sections to raster. ...
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Change detection of interpolated dataset

I produced three different raster layers interpolating points collected in-situ in three different months in the same area using Kriging. What is the best way to highlight the temporal changes that ...
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Generating vertical sections in 3D models in ArcGIS Pro

I have a model in NetCDF from EBK 3D in ArcGIS Pro and I need to take a vertical section, but ArcGIS only provides horizontal sections, has anyone faced this issue and know how to get vertical ...
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QGIS Smart Map Plugin - Error Running Interpolation

I am new to using the Smart-Map plugin. I added my data and did the ordinary Kriging interpolation. Just before it reaches 100% I get the following error message: An error has occurred while executing ...
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Optimize summary stats PostGIS query for multiple polyline layers over a worldwide grid

I have two global PostGIS polyline layers, one of which is a subset of the other. The subset defines where there are issues with the system being mapped. I am trying to map the likelihood of a ...
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Standard deviation of interpolated data

I have a dataset with air-quality measurements in several points across one state, through several months. Thus, for each point I can calculate average, variance and so. My goal is to interpolate data ...
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How to stack/merge geom_stars items/plots in one - in R

If I have plotted the Relative Error Maps for the Silt soil attribute for the following 4 different soil types: Cambisols, calcisols, leptosols and fluvisols that form my study case area: ggplot() + ...
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Spatial Outliers Detection and Remove in R?

I have run my data in R, and created a distribution mapof my data (Clay Soil Property). I want to detect in a way the spatial outliers that i can see from the map, and remove them in order to execute ...
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Spatio-temporal Kriging and how extract specific values

I have several years of data that needs to be converted to STDFDF. Shapiro.test and Adf.test talk about non-stationarity and non-normal distribution. particolato_May2021 <- read.delim(file = "...
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How to create a Grid in R for Kriging

I have done my work for creating variograms etc, and i would like to run kriging. I've loaded my dataset, and i know that i should create a grid file, but i don't know how. I have the shapefile from ...
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Does Kriging change known values

Does the process of Kriging routinely change known values to accommodate other nearby known values? You can see I know little to nothing of this Kriging stuff. My concern is that a known and accurate ...
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Kriging with gstat and Gaussian model produces bad outputs

I am trying to produce kriging models from elevations points using the gstat package. I can fit models to the empirical variogram using exponential, spherical, and Gaussian curves. However, despite ...
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Remove X and Y axis from PyKrige result

I am trying to use the PyKrige module in Python to interpolate via Ordinary Kriging my XYZ dataset. I have the below script, code taken from https://colab.research.google.com/drive/1mZDVJ-...
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PyKrige constantly running into memory errors even with small dataset

I have an xyz file in which I'd like to apply the interpolation method of kriging to via python. In order to do this, I have come across the module PyKrige and duplicated this example perfectly on my ...
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Using PyKrige for ordinary kriging on an XYZ file

I've previously used ArcGIS for Ordinary Kriging, but I now need a Python alternative. I found the PyKrige module which i decided to give a try, but I am bit confused by it. So far, I have read my XYZ ...
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Kriging Interpolation in ArcMap

I want to interpolate one field of the shapefile named 'Interpolation' by Kriging method. But want to change the processing environment to the extent of another file namely 'Polygon'. I tried '...
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Using a dynamic formula with parrallel kringing in R

I am trying to achieve parallel Kriging in R on several variables using a loop. Here is a reproducible example using data meuse and a code for parallel kriging that I found here. In the code below, ...
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Ordinary Kriging: "Warning message: In fit.variogram(data.var, vgm("Mat")) : No convergence after 200 iterations: try different initial values?"

I am trying to fit a variogram for kriging using the sp and gstat packages in r, but when I fit the variogram using a mattern fit, I get this warning message: Warning message: In fit.variogram(data....
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Error message with Krige function: Error in as.character.default(X[[i]], ...) : no method for coercing this S4 class to a vector

I am trying to run the Krige function but I keep receiving NA values for var1.pred and var1.var. After using the warning() command, it says: Error in as.character.default(X[[i]], ...) : no method for ...
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Calculating volume of IDW raster below Height of Plane, but it is failing

I am using ArcMap. I am trying to calculate the volume of water using IDW Tool. When I reach a point to calculate, the statistics below height of plane cannot run, giving me 0.00, What could be the ...
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Using ArcGIS geostatistical wizard for Kriging in ArcPy

In ArcMap , I have many interpolations to create and need a way of doing batch processing. I would like to use Universal Cokriging for interpolation. I have point features in a regular 0.25 arc deg ...
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Cokriging Predict Function "Error in h(simpleError(msg, call))"

I tried to do CoKriging using gstat library in R. it works perfectly until the prediction function CK <- predict(g, Grid) It gave me this error: Error in h(simpleError(msg, call)) : error in ...
Michael's user avatar
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R - Why are my kriged interpolation values so low when using ordinary kriging (gstat)?

I am using a synthetic dataset that I generated for the purposes of fulfilling an assignment. I am attempting to use ordinary kriging to interpolate point data across an entire field, but my ...
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Kriging with gstat package in R produces empty interpolation points

I have kriged a dataset with the gstat package in R, but it has produced an empty variable as a result. I have 1,167 measurement points within a field, and I am trying to interpolate them across 3,464 ...
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Type error when kriging with python: TypeError - Input z must be at least a (2, 2) shaped array, but has shape (1, 1)

I am new to kriging with python, and I have a csv file that I am trying to interpolate and plot. However, I am getting the following error: TypeError - Input z must be at least a (2, 2) shaped array, ...
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Adding kriging results back to a GWR model in R?

How can I add the kriging results of a downscaling process back to a GWR model? Basically, I have 2 raster, 1 at 400m (let's call it x1) resolution and 1 at 100m resolution. I upscaled the latter to ...
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Geographically weighted area-to-area Regression CoKriging for raster downscaling in R?

this will be probable a series of questions, so in this one I will try to set the big picture. I want to perform geographically weighted area-to-area regression Cokriging (GWATARCoK) to downscale 1 ...
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Residual bubble plot of krige.cv function dataframe

I want to plot a bubble plot of residuals from the krige.cv function with the bubble function. However I get an error: Error in as(obj, "SpatialPointsDataFrame") : no method or default for ...
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Export kriging plot as GeoTIFF

I have performed kriging and plotted it with ggplot, now I want to load the plot in QGIS. For that to work I need a GeoTIFF file of my plot. How do I convert my plot into a GeoTIFF file? EDIT: added ...
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Ordinary kriging in QGIS with geodetic coordinates

I am using QGIS 3.16.9 Hannover. I want to create a surface (with kriging) from a list of points whose SRC is WGS84, so I am working with geodetic coordinates. They are in decimal degrees covering a ...
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Changing value while converting Geostattistical layer to raster using Geostatistical analyst

I using geostatistical analyst for interpolation. when geostatistical layer create and I want to export it to the raster the range of min-max values changes. how could I export GA layer to raster ...
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2 votes
1 answer
129 views

Using ArcPy to iterate feature classes for kriging

I have 12 feature classes and they are named from net_0 to net_11 but the order of feature classes In Arc catalog is,List_wells = [net_0,net_1,net_10,net_11,net_2,net_3,net_4,net_5,..net_9]. I used ...
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Fitting a variogram for Kriging in R

I want to fit a variogram of my data for kriging. Here is what I have so far: library(sp) library(rgdal) require(gstat) setwd("C:/Users/49151/Desktop") #import data data <- read.csv(&...
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