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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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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Spatio-temporal Kriging and how use shapefile
I have one month of data that I converted to STDFDF. Shapiro.test and Adf.test talk about stationarity and normal distribution of natural log transformed dataset.
#set the spatial location of the ...
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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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Kriging Interpolation using QGIS
I want to run Kriging Interpolation using QGIS. I installed the smartmap Plugin. I am using QGIS 3.22.13. It gives me an error on geometry.
I am using CRS WGS 84, ESPG 4326. I used the smartmap Plugin ...
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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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ST-cokriging using spatial temporal data and variogramST in R
I'm trying to do cokriging with spatio-temporal (ST) data. Following Hu and Shu's (2019) methods, I've created 3 ST-Variograms, 1 for the first variable (Oxygen-18) and one for the second variable (...
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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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PyKrige interpolation results very different to ArcGIS Pro
I had been using ArcGIS Pro's Kriging tool to apply Ordinary Kriging to my dataset.
This produced the below results, which were exactly as I wanted (I have also included a screenshot of the parameters ...
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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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Change Kriging Output Scales using ArcGIS Pro
[![enter image description here][1]][1]
I have made a series of Kriging maps based on different time periods, but I want them all to have the same scale.
For example, all should be 33-69.5. Is this ...
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IDW vs. ordinary Kriging, spatial clusters
Using ArcMap, I have a dataset containing points with coordinates and value (cost of infrastructure). There is no even distribution, the points are mostly clustered around larger cities but with some ...
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Number of Pairs in lag class of variogram using ArcGIS Geoststistical Analyst [duplicate]
My question has already been asked (but remains unanswered) as ArcGIS Geostatistical Analyst variogram lag pairs
I'm looking to find out how many Point pairs are in a lag class in the semivariogram ...
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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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Kriging output is blank
I have used kriging with default settings where I have five points with XY coordinates, ID and concentration. The concentration is ranging from 12 to 161900. The output I get from this is just a ...
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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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280
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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 ...
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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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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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Plotting a heatmap of Kriging with coordinate in R
I performed Kriging in R. But I have trouble getting a plot of a colored heatmap showing the resulted interpolated area along with a lon/lat values at the side and on the button.
Here is an example, ...
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Why can't gstat::krige accept duplicate locations when universal kriging?
Let us create a simple simulation worthy of gstat::krige with universal kriging, in the language of linear mixed models, i.e.:
Where X is a n x n_vars matrix of n_vars additional variables, betas is ...
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Ordinary kriging is not working in QGIS 3.20 & SAGA-7.2.0
I am using below data for making kriging interpolation.
structure(list(Serial = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L,
10L, 11L, 12L, 13L, 14L, 17L, 18L, 24L, 28L, 30L, 31L, 36L, 37L,
43L, 44L, 46L, ...
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Simple kriging in raster
I want to use a Python script for interpolation in 1st image to have the result of 2nd one, this result is from simple kriging saga. I tried the code below but I have two main problems.
Need a lot of ...
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Geo data normal assumption - effects
I have a basic question regarding Geo data: is the normal assumption mandatory?
Given a dataset I identified outliers and inliers (using Moran local and plot test) so I excluded them from the original ...
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NAN's in the kriging predictions in R
I am trying to perform the kriging prediction of my data.
I follow a pretty standard process.
Firstly, I prep a grid to which the kriging predictions are supposed to be inserted.
I prep data that I ...
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Warning message while kriging in R [duplicate]
krig_Gaussian<-krige(formula=(B)~1, locations=Amb_m, newdata=gd_m, model=model_Gaussian.variog_m)
[using ordinary kriging]
Warning messages:
1: In proj4string(d$data) :
CRS object has comment, ...
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Kriging observations using additional knowledge from geophysical model
Here is a simplified explanation of the problem I am trying to solve : I have (1) a 100x100 grid with air pollutant concentrations in a city obtained from an air quality geophysical model, and (2) a ...
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