Geographic Information Systems Questions, Problems & Solutions : TransWikia.com ~ Page 26

Change order of polygons within a feature layer? (arcgis js 4.xx)

I have tried using the below in my initial query, and query right before drawing my polygons with class breaks. query.orderByFields = ["Shape__Area DESC"];However this did...

Asked on 11/12/2021

0 answer

Displaying Feature Layer Field Values on webpage without Map using ArcGIS API for JavaScript

I am just learning JavaScript for this mini-project. I am looking to display the field values from a service feature layer on a web page using HTML and JS without...

Asked on 11/12/2021

1 answer

Increasing Resolution of Image By Splitting Image Pixel into Smaller Pixels | Google Earth Engine?

I have two MODIS satellite images with same custom band, one of 1000m/px resolution and other of 250m/px. I want to compute their mean 'image' and display as map layer....

Asked on 11/12/2021

0 answer

R zonal statistics for classes

I am trying to extract zonal statistics for different classes in R.I have a raster with two classes (0,1) and need the area (or percentage) of each class under...

Asked on 11/12/2021

2 answer

Selecting feature (point) based on specific attribute value(s) of another layer using ArcGIS Pro

How do i select a feature (point) based on a specific attribute value(s) of another layer? Scenario: One layer (map) polygons representing disease risk across a continent, with several columns...

Asked on 11/12/2021

1 answer

NMEA Data Feed into QGIS

We have a maritime simulator in our office we occasionally use for engineering studies...I was trying to figure out how to get a shape file of the path taken by...

Asked on 11/12/2021

2 answer

TauDEM: How to extract the longest flow path from an outlet to the basin divide as a shapefile

Using TauDEM I've created a number of derived raster products from an initial 30m SRTM DEM with a statewide (South Carolina) extent. Using the D8 modelling methods, I've created both...

Asked on 11/12/2021

0 answer

Performing a spatial join to obtain attribute field summaries of nested polygons that are located within polygon regions using ArcPy

I have created an ArcPy script tool that finds depressions from an input DEM, and then generates closed contours (both polyline and polygon outputs) as well as regions (raster and...

Asked on 11/12/2021

1 answer

DEM produces pixelated hillshade when CRS changed to WGS 84 / UTM

UPDATE:I now realize my problem with pixelation occurs when I change the CRS to WGS 84 / UTM. Anyone familiar with why this would happen or how to avoid...

Asked on 11/09/2021

4 answer

Plotting Bare Soil Line on landsat data in RStudio?

I am using RStudio with landsat package for computing and plotting the Bare Soil Line (BSL) on landsat tif image running on my HP Pavilion i7 laptop. The codes for...

Asked on 11/09/2021 by Waseem Ali

1 answer

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