Questions tagged [weighted-overlay]

An analysis that examines different attributes of an area and creates a suitability score based on the sum of those ranked attribute values.

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Combining weighted overlay map with exclusion map

I use ArcMap and I've made a weighted overlay map and up to these map I want to add a map which contains excluded areas. My intention is to create a map similar to the weighted one but upon this, the ...
Σπύρος Ντρίτσος's user avatar
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How to obtain a suitability map by combining an exclusion map and weighted overlay map

I currently have 2 map outputs (1) A classified map (weighted factors) (2) An exclusion map I intend to obtain a suitability map by combining the map 2 (the exclusion map) with map 1 (the weighted ...
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Problem with Principal Component Analysis in ArcGIS

I am doing research using ArcGIS for selection of potential sites for small-scale irrigation in Burkina Faso. I have the following layers: aquifer types, LULC, precipitation, slope, soil type, ...
Bokhir Alikhanov's user avatar
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How to create a layer with a gradient of values along a fixed distance?

Here is my issue. I have a polygon layer to which I have applied a risk value of 10/10 to enter into a Weighted Sum decision making process. At the boundary of this layer, rather than instantly go to ...
I'm not a robot's user avatar
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Weighted overlay for polygon data

So you know there's a [Weighted Overlay][1] tool that return indexed raster based on classed/indexed raster that have been assigned weights totaling to 100. Now I want to do the same thing but for ...
Arthur_Morgan's user avatar
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How would I assign weights as user-defined variables in model builder for the Weighted Overlay tool?

So I'm trying to create a geoprocessing service to be uploaded for an ArcGIS Online Geoprocessing Widget and I'm running into a roadblock. I've created a model shown below, but not only is it not ...
Dean OKeefe's user avatar
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Multiple rasters into weighted overlay using ArcPy

I am building a Python tool to automate a least cost path analysis. For this I need to iterate over layers and values in order to add them into the weighted overlay geoprocessing tool. Example: User ...
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Understanding how Weighted overlay tool works

After watching videos and reading the documentation, I just can't wrap my head around the weighted overlay tool. I need to create an in-depth go-no go zone for a school project. I have got several ...
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Creation of a weighted raster overlay map using Ischrone (travel time) buffers, is it possible? [closed]

I am a beginner utilising GIS and QGIS specifically and I am currently using the software to study housing suitability in a defined study area using a sustainable development framework for my final ...
JacobGISbeginner 's user avatar
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Establishing a Sequence of Asynchronous Events in a Google Earth Engine App

I am currently writing a tool in Google Earth Engine that is comparable to ESRI's Weighted Overlay As of now, the user can interactively reclassify and weight each raster layer. Ultimately they will ...
Eli Simonson's user avatar
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Calculating Population-Weighted Exposure level using QGIS

I am trying to calculate population-weighted exposure level (PWEL) of particulate matter. I have raster layer of both particulate matter and population. The equation to calculate PWEL is: Pi is ...
Yacob Tesfamariam's user avatar
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SAGA Ordered Weighted Averaging tool in QGIS Errors

I'm attempting to use the SAGA Ordered Weighted Averaging tool in QGIS (3.16) and am running into a few errors. Every time I've run the tool I've used the same number of inputs as weights in the table,...
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Classifying multiple layers (vector or raster depending on what's easier) to one final layer distributing the different features weighted

I'm using QGIS and currently I'm doing a Map Project and therefore I preselected every building that is available depending on the purpose. Then I wanted to do a second criteria which values which ...
user189028's user avatar
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Creating new layer based on existing layer Google Earth Engine

I have many layers consist of many parameters. I want to create a new layer called 'Reforestation Priority Area' based on weighting given to existing layers. Is there any way to do that? The code is ...
imstilllearning's user avatar
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Assigning a weight to thousands of values in the attribute table to then make a heat map in QGIS 3.10

I am working with some data that has about 19,000 values. This data has been imported as a text delimited file layer, as it is GPS (long and lat) point value data, that has an associated metadata or ...
Hannah Solway's user avatar
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How to create a heatmap from overlapping polygons using ArcGIS Server JavaScript API?

Using the ArcGIS Server JavaScript API version 4.18, how can I visually highlight areas with high concentrations of overlapping polygons, such as these historical cyclone tracks? In addition I need ...
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Math formula to calculate GPS location for weighted GPS data points

I'm working to improve the location and accuracy of a map / data-point driven application. I have a collection of locations of interest. Each location of interest has a collection of data points that ...
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Performing Weighted Overlay using vector data with no inherent values in ArcGIS Desktop? [closed]

I have been asked to do a weighted suitability analysis using all vector based polygon feature layers (8 different layers). Each layer has been ranked from 1 to 8 in order of importance. My problem ...
Justin Cahoon's user avatar
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Creating weighted sum analysis using DEM and population data using QGIS?

I have a shapefile containing population points for Vietnam, and I am aiming to perform a weighted sum analysis using a Digital Elevation Model. Basically, I'd like to combine elevation, population ...
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Weighted sum vs Weighted overlay

I´m working on a suitability analysis for which I´m doing a sensitivity analysis. When I modify the weights for this analysis I have values with decimals, so I can´t use "weighted overlay" tool. ...
Alfonsina López's user avatar
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344 views

Ordered weighted averaging error: can only concatenate list (not "str") to list

I am trying to perform an ordered weighted average on two rasters in QGIS 3.0.3 (as a trial run for doing it on more than two rasters). But I keep receiving the following error code: Traceback (most ...
Sammy's user avatar
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Ordered Weighted Averaging problem

I want to do an Ordered Weighted Averaging (OWA) analysis using SAGA in QGIS (not by using pyqgis) as a suitability assessment for recreation/restoration of specific habitats. There's a number of ...
Caroline's user avatar
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316 views

Issue with Weighted Raster Overlay Service for Suitability Modeler Widget

I'm attempting to build a hosted Weighted Raster Overlay Service (WRO) in ArcGISPro to use in AWAB's Suitability Modeler Widget. I've downloaded the Weighted Raster Overlay Service toolbox via THIS ...
Magda's user avatar
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Performing Sensitivity Analysis on Suitability Model using ArcGIS ModelBuilder?

I am working on a suitability analysis model for a landfill site selection. Basically, I am using GIS-based MCDA so I have 11 factor layers/maps that I considered for the analysis. I have already ...
Mak's user avatar
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Weighted-overlay on raster calculator?

I have got two cost surface rasters, one for land-use and the other for slope values. For my analysis, I've been told to make a "weighted-overlay", however I don't have the SAGA plugin available on my ...
Guilherme Salles's user avatar
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218 views

Weighted Overlay Missing Values

I am trying to create a bikeability index for some local roads. I have four inputs: traffic volume, speed limit, shoulder width, and slope. Each raster input has been re-classed to 6 classes. When I ...
Malemute Kid's user avatar
2 votes
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95 views

Adding raster layer in GeoServer using ArcPy gives exit code -1073741819 (0xC0000005)? [closed]

I am trying to perform a weighted overlay analysis using ArcPy. As input I'm using 5 map layers of same column and heights. def weightOverlay(): ambu = "rasterambu1.tif" fire = "rasterfire1.tif" ...
Richiedlon's user avatar
1 vote
1 answer
2k views

Continuous smoothing of raster using R?

I have a dataset on some villages like this on a grid: I want to fill the space of the whole grid so that each grid cell has a value that reflects the pressure from the surrounding villages (i.e., ...
tsutsume's user avatar
3 votes
1 answer
5k views

Calculating area weighted average in ArcGIS Desktop?

I want to calculate area weighted average of districts of India. I have Particulate matter 2.5(PM2.5) data for Districts of India, and now I want to find area weighted average of PM2.5 for each of ...
Da vinci's user avatar
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125 views

Combining rasters after weighted overlay

I have performed five weighted overlay analyses in arcgis 10.2 and got five rasters with pixel values ranging from 1 to 10 as outputs. Now I need to combine those rasters in one single raster stating ...
user95904's user avatar
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2 answers
362 views

weighted sum overlay of raster layers (Wind resource map and GHI Map)

I want to generate an output raster map which indicates the areas of wind and solar energy potentials. My study area is India. I have created GHI (Global Horizontal Irradiance) raster map (by ...
Anuja Negi's user avatar
1 vote
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506 views

Extracting a time interval from NetCDF-data in ArcMap Desktop 10.4

In ArcMap 10.4 (advanced licence) I have added a netcdf-file with EU-temperature-over-time data (time being every day between 1995 to 2016). I just need the year 2010 from this data, but I'm still ...
BettinaS's user avatar
3 votes
1 answer
524 views

weighted overlay of several rasters

I am trying to create a script that creates a new list of rasters by searching through the file names then using that new list to execute the weighted sum function in spatial analyst. I am having ...
Allie's user avatar
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Adding Raster to Weighted Overlay causes large parts of Output Raster to have NoData pixel values?

I've been building a large suitability analysis model in ModelBuilder over the past couple of months, it has a total of 11 rasters created and put into a weighted overlay. The model runs and an ...
EnvironmentalPlanner's user avatar
1 vote
1 answer
439 views

Weighted overlay output raster does not match the extent of my input rasters

I am having trouble understanding why the resulting extent of my raster produced by my weighted overlay doesn't not cover the extent of the inputs I used. All my inputs are in the same coordinate ...
Joshua Aranda's user avatar
4 votes
1 answer
1k views

Randomly generate points using weights from raster

I need to randomly generate ~ 40K points throughout my region of interest, but I need to weight the point selection by a set of probability weights, stored as a raster - such that higher probability ...
user65148's user avatar
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2 votes
1 answer
240 views

Doing weighted overlay analysis using CSV data joined with shapefile in QGIS?

I have a CSV file which has data for different counties income, Population and Proximity of United States of America like this : ]1 I have already joined the CSV file with the shapefile of United ...
udAyKumArVermA's user avatar
1 vote
1 answer
531 views

How to use different columns of a csv file data as different layers for weighted overlay analysis in QGIS?

I have a CSV file like this: I would like to do a weight overlay analysis for each column of the CSV and present it as a layer of the map of United States of America. The final result should ...
uday's user avatar
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3 votes
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382 views

How to save raster output in different directory without duplicate in set workspace? Arcpy

I am using the Weighted Overlay tool in Arcpy and I've not had this issue before with other tools. I'm wondering if it's a tool-specific problem. The output I get from the weighted overlay tool saves ...
MKF's user avatar
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5 votes
2 answers
1k views

Weighting amount of overlapping polygons in postgis

I have two tables that I join in my existing workflow. One of these includes flood events (was a shapefile that has been imported to PostgreSQL), the other one is a grid that holds the amount of ...
marius's user avatar
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2 votes
1 answer
74 views

How to weigh the size of a spatial event with respect to the number of its hotspots?

This is probably a map algebra problem. I have a 2D map with values ranging 0.0 to 1.0 spread all over it. The algorithm that produces them is an application of the fractional Brownian motion. The map ...
FaCoffee's user avatar
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Performing weighted overlay analysis in MapInfo?

I want to prepare a landslide zone map using weighted overlay analysis. Is there a tool in MapInfo to do weighted overlay as in ArcGIS?
pauline's user avatar
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