TransWikia.com
  1. All Categories
  2. Geographic Information Systems

Geographic Information Systems : Recent Questions and Answers (Page 549)

Find answers to your questions about Geographic Information Systems or help others by answering their Geographic Information Systems questions.

Function with map.addLayer() and map.removeLayer() not working

I am trying to create buttons that add and remove layer groups and I am not having any luck. Can you take a look at how I have this set...

Asked on 09/07/2020 by Arrakis_Surfer

1 answer

Adding dynamic data from a MySQL server as layer in ArcGIS Online

I am trying to get my head around ArcGIS Online's Dashboards. One thing that I am struggling with, is how to add dynamic data that is served from an external...

Asked on 09/07/2020 by Tomm

0 answer

Debugging ogr2ogr "AddGeometryColumn failed" and "Terminating translation prematurely after failed translation of layer"

As noted in the title, I'm getting the following error:ERROR 1: AddGeometryColumn failed for layer pretty_polys, layer creation hasfailed.ERROR 1: Terminating translation prematurely after failedtranslation of layer mybeautifulshapefile (use...

Asked on 09/06/2020 by BenjaminGolder

5 answer

Checking intersection of two shapefiles using ArcPy

I am new to Python programming. How do I check the intersection of two shapefiles using ArcPy? If the shapefiles intersect, it should return True else False. Below is the...

Asked on 09/06/2020 by Muhammad Qasim

2 answer

QGIS expression to check if a an attribute value of a feature exist in another attribute column

I have a shapefile with two fields 'Name' and 'CountyFacilityID'. I would like to create an expression to select all features where Name exists in the CountyFacilityID column for any...

Asked on 09/06/2020 by Someone191

2 answer

Tracing Upstream Accumulation from a polygon start

I am new to ESRI products (I typically use QGIS), but am using it in order to analyze upstream/downstream flowlines with the National Hydrography Dataset (specifically, HUC-4 mapping units for...

Asked on 09/06/2020 by Laura

1 answer

Calculating length of polyline defined by list of coordinates using Python

I have a list of coordinates, knowing that I am working using EPSG:4326 and using Python I would like to calculate the length in kilometres of the polyline defined by...

Asked on 09/05/2020

1 answer

Creating polygon GeoJSON from PostGIS and rendering in Leaflet

Drawing the polygons on QGIS and then import the layer directly on the PostgreSQL / PostGIS db. Then I create a JSON file via PHP and read it to the...

Asked on 09/05/2020 by kassandra

1 answer

IndexOutOfBoundsException when using "in" function in GeoServer

I have trouble with the in filter function in SLD submitted to GeoServer. The root cause seems to be within the geotools. Currently we're using GeoServer Version 2.15.2 and GeoTools...

Asked on 09/05/2020 by milan

0 answer

Can't export data from related table in Survey123

I have created a survey that uses a feature service with a point layer and a related table. The survey is working fine, but when I try to export the...

Asked on 09/05/2020

0 answer

Ask a Question

Get help from others!

© 2024 TransWikia.com. All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP