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I would like to draw some circles, always centered, according the zoom level.It would be use as a scale : like draw every 50km@zoom10, 10km@zoom11, 5km@zoom 12... I'm not a java script pro. أكثر...

Bonjour, Avant tout je tiens à précisr que je ne suis pas un expert du tout en SIG. Je cherche a intégrer dans un code python une fonction qui créer des cartes automatiquement en fonction d'un attribut d'une des couches vectorielles (le numéro de parcelle de ma couche "Parcelle0"). La...

I am trying to edit the length of all the text fields in a feature class. The feature class has a lot of fields so I want to do this in python. I only have access to v10.1 so cannot use the AlterField_management option. The way I'm going about it is to use fc to fc conversion with an...

Does the Bing Maps API offer any innovative features/functionality that set it apart from its competitors (Google Maps, OSM, etc.)? Specifically, any travel-related ones that would make a great basemap for an app or webpage? Thanks! أكثر...

I just developed a distance matrix between various points across Canada in QGIS. The distances produced are in decimal degrees, and I would like to view them in metric. I am unsure how to do this. أكثر...

I am trying to figure out the best solution to hide overlapping lines. I have a layer of polygons representing crustal plates. I have a polyline layer of fault lines that overlap some of the polygon boundaries. The fault lines are represented by dotted lines and the polygon boundaries which...

I'm trying to add a query layer from an Oracle database into a blank 10.2.2. map. I enter the query, validate, finish, and the software thinks for a second and then just winks out. No error message, no nothing. One of my co-workers can perform the exact same query layer and a table shows...

Bonjour, Je suis entrain de numériser 2 petits réseaux d'assainissement collectif (2x 2,5 kms). J'ai ouvert une couche du cadastre numérisée avec le plugin cadastre et je travaille aussi avec Google Satellite en parallèle. Toutes mes couches sont en CC43 (EPSG: 3943) sauf la couche Google en...

My hometown Chennai is facing one of the wettest monsoons of the century, recording close to 120cm of rainfall this month. Daily life for over 6.7 million people was disrupted and the media called attention to the situation. Unsurprisingly, there is virtually no data available to identify which...

How is it possible to define my own values for (OFFSETA, OFFSETB, AZIMUTH1, AZIMUTH2, VERT1,....) instead of defined default values in Viewshed analysis in ArcGIS? أكثر...

Trying to perform a replacement for an NDVI without a fourth band, but I've extracted vegetation feature classes from LiDAR classes. I've added in the a 'high elevation' class using PCA, but am unsure how this will interact in a MLC or SVM classification. أكثر...

This question already has an answer here: Import functions in python Add-In logic script 1 answer I need to load all layer names into a combo box. I did the same using esri site. But the tool is...

I am using ArcGIS desktop 10.2.2 and I am trying to use the convert time zone tool to convert times (field is a date field in a geodatabase) from UTC to PST and it is returning null values. I have used the tool before and it worked intermittently. Any clues as to why it won't work or...

I have a series of buffer polygons that I need to perform a spatial join on to get overall counts within the buffers. I can do this by copy and pasting the spatial join script over and over and just swapping out the buffer layer/output file name. However, I'd like to figure out a simple loop...

I am working on two polygons. One is Forest layer that has the ownership and I have another polygon that has the fire perimeter. I need to build polygon construction to cut out some of them like we need to take out small area like non-forest. I do not know if this is the right method to clean...

I have downloaded a DEM from digmap and have opened it in arc map. I now want to transfer elevations from each gridsquare into excel to be used in a water routing model. Do you have any ideas how to do this? أكثر...

Por Gina McCarthy Apenas dos semanas después de que se estableci أكثر...

As a diver and marine biologist for EPA, I spend a fair amount of time underwater. My area of expertise is in the study and conservation of seagrass. These underwater meadows can cover vast swaths of the seafloor and they serve as important nurseries for many fish and shellfish species...

Is there any SWIPE tool in QGIS similar to what you have in ArcGIS.. What I am looking for is a tool to swap fast between two layers. I am comparing sidescan sonar mosaic against bathymetry for positioning issues. Many thanks :) أكثر...

Currently I'm developing a WebGIS app using OpenLayers 2.13.1, GeoServer, and PostGIS. The app has buffer analysis feature which is working fine like the picture below. What I'm looking for is: is there a 'color blend' mode (or creating one) for the vector feature in OL? Like 'multiply' or...