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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Kriging method vs. IDW in soil moisture interpolation
I have XY coordinates and soil moisture values for a grid of 10m and I used add XY data to import my excel data to ArcMap 10.5.
I applied both IDW and kriging methods for interpolation. The results ...
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R function krige.cv() returns NAs
I recently completed a geostatistics course, and now trying to apply my knewly acquired knowledge to a real case.
I have a dataset with 2 122 groundwater level measurement points. I would like to ...
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R kriging raster returns NA for some prediction points?
I am trying to interpolate a raster layer of chlorophyll-a data using kriging (gstat::krige) in R, however the resulting interpolation is showing NA values in a peculiar straight line through the ...
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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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0........0.kriging error messages, grid file problem ? (automap, gstat)
I am trying to conduct kriging of variable called percent in South Africa.
head(LL12)
Location Longitude Latitude percent
1 L1 16.48476 -28.60737 1.0000000
2 L3 16....
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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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QGIS: Spatial extrapolation
I have few sample points with values on (agricultural) field and I want to interpolate and extrapolate values inside the field boundary.
Ideally I would like to use Kriging (as it smooths local extrem ...
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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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Only Interpolating within a polygon feature in ArcMap 10.1
I have sample points within a single polygon feature class that I would like to interpolate, likely using kriging. The problem is the sample points and polygon boundaries are many miles apart and ...
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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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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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Symbology and statistic issues with interpolation maps in Geostatistical Wizard of ArcGIS Pro
I have created a series of depth interpolation maps using ordinary kriging with the Geostatistical Wizard in ArcGIS Pro. To make the maps comparable to each other, I manually adjusted the class breaks ...
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Groundwater interpolation using kriging with external drift
I have a bunch of groundwater measurements that I would like to interpolate taking into account the ground elevation. For this, I was advised to use kriging with external drift. I have tried different ...
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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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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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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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Spatial interpolation of climate data using latitude, longitude and elevation in r
I have downloaded E-OBS gridded daily climate data on 0.1-degree grid. For each grid point, I have longitude, latitude, elevation and climate data, i.e. precipitation sum / mean temperature. Now, I ...
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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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Performing Kriging in QGIS
Does anyone know how to perform kriging in QGIS? and not via SAGA but actually in the program itself.
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R gstat krige() - Covariance matrix singular at location [5.88,47.4,0]: skipping
When I want to perform the kriging it only works sometimes, depending on what values I use in my datatable. As a result of the krige function I get for var1.pred: NA NA NA ... and var1.var: NA NA NA .....
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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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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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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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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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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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How does Empirical Bayesian Kriging of ArcGIS Pro handle sampling bias?
In ArcGIS Pro, simple kriging approaches allow you to de-cluster your data before applying a normal-score transformation. According to the Esri guideline, normal-score transformations are only ...
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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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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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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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Rule of thumb for complexity of 3d Kriging (with pykrige)
I've been using pykrige for some data interpolation. It's great and works well in 2d. I recently tried the 3D version though, and it takes forever to run (> a day before I killed it), just for ...
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Empirical variogram plot in QGIS
I am trying to do kriging on mortality rates using QGIS (I have version 3.0 but I downloaded the 2.18.20 to be able to follow the web documentation and most of the answers here).
From what I have ...
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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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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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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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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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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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