A layer is a collection of information. It contains specific elements of a gis in a specific presentation method (e.g raster or vector layer). Layers can be edited separately in order to create individual toppics for a map.

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2
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1answer
86 views

Virtual fields are lost when duplicate layers

I've just upgraded to QGIS 2.12.3 - and hoped that the issue which was really time-consuming in 2.12. <3 could have been solved ... On duplicating layer - with tons of joined tables and virtual ...
7
votes
1answer
178 views

How to speed up QGIS project opening with large point datasets?

I recently loaded a big point set (in terms of memory usage) in the QGIS project i'm working on. This layer is necessary for the project but it is not used often. Most of the time is turned off. The ...
1
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0answers
91 views

Sources for meterological data with high resolution

I was running Maxent on an endemic species of andaman and nicobar.But the climate data I have from worlclim.org ( tile number 29 ) is not of high resolution and thus I can't see the distribution ...
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0answers
47 views

Rename a empty layer that has been added to a group layer [closed]

Originally I was trying to add a empty layer that was stored on disk. That contained no data. I created the empty layer , by making a group layer within my mxd and then saving it onto a location on my ...
-1
votes
1answer
125 views

How to extract all pixel values in a raster file [duplicate]

I have a image difference from ArcGIS, which i have performed a remap function on. The layer is a temporary layer and does not have an attribute table, i need all the pixel values to do a frequency ...
2
votes
1answer
474 views

Get feature from two overlapping KML layers doesn't work

I did an implementation similar to http://openlayers.org/dev/examples/sundials.html The difference is that I have two or more kml layers at the same location and want to show their information ...
4
votes
1answer
3k views

Layer visibility using maxscale minscale not working

I'm using Openlayer and Geoserver. I have a series of layers that have a scale parameter like: 1:50000-1:25000 where 50000 is the max scale while 25000 is the minscale. I have a map like in this ...
1
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2answers
125 views

Count number of group layers or Layers inside group layer using ArcPy? [closed]

I am looking for a way of counting the amount of layers within a group layer I have an empty group layer inside my map and I am looking for a way of initiating a process if there are 0 layers inside ...
2
votes
1answer
2k views

Changing the name of layer using python

I am attempting to change the name of the layer. The following code changes the name of the layer but then removes the layer from the map, and I am not sure why. Note: I don't have any remove layer ...
1
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0answers
79 views

Arc Collector offline map - Copies of a map layer not downloading correctly

I have an Arc Collector project on the go and everything is working great except for one part of the offline mode. I encountered an issue with the offline version of the map displaying the layers ...
2
votes
0answers
90 views

Setting extent with python in QGIS in new project

Situation: I am trying to write a simple python script for QGIS. The script aims to load one layer, zoom to given coordinates, and 'place a pin' there. The coordinates will change every time I run the ...
2
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0answers
36 views

How to intersect layers that do not completely overlap in QGIS?

I have two layers in QGIS that I want to intersect in a specific way. On one side I have a layer of the different biotope types in the city of Berlin. On the other side I have a layer of the ...
1
vote
1answer
100 views

Can multiple point symbols be stored in one QGIS layer?

I'm new to QGIS, indeed fairly new to GIS systems in general. I have been asked to create about 20 small maps for a local historical society. The maps are for walkers to follow various routes passing ...
3
votes
1answer
75 views

Adding hover pop-up notes to map Arcmap desktop 10.3

I have a layer of points defining a variety of geologic features overlying a global map. I would like the user to be able to hover over a point and see a description of that feature. Hyperlinks ...
2
votes
1answer
302 views

Ordering Cartodb torque visualization over Google Maps heatmap layer

I am attempting to create a map with two layers: a CartoDB Torque visualization on top and a Google heatmap layer underneath. So far I have only been able to get them to draw in the opposite order I'...
1
vote
1answer
222 views

hide unhide layers in leaflet

I want to hide somme layers when I click in a layer and resotore the visibility back after clicking out I tried with this code but it doesn't work here also the punker code Hide show layers var ...
1
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1answer
3k views

Get layer name by click on features OpenLayers3

I want to add selec interactions to my OL3 map. Adding two different select interactions like this is not working. Only the second one works. Like this: var select = new ol.interaction....
1
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2answers
69 views

Benefit of adding Metadata descriptions to layers using ArcCatalog?

I've tried adding Metadata to my primary shapefiles before using ArcCatalog, however, I don't know if this really adds anything professionally to my layers. Is Metadata and Layer description in ...
1
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0answers
45 views

QGIS polygonize tool not working [closed]

I am having a problem using QGIS ver 2.10.1 Pisa. I am trying to use the polygonize function on a raster .tif image, and it runs, but only produces a thin sliver of polygons at the top, then stops ...
6
votes
1answer
119 views

Establishing Default Query layer for Google Earth in “Map to KML” export from ArcMap?

I export a lot of maps for customers who request them from our office. Recently I have seen more and more requests for us to export our GIS into the .KML or .KMZ file type so they can be viewed on ...
0
votes
1answer
51 views

Adding Video to CartoDB

I am trying to Add a layer with Youtube in the info window as follows HTML <div class="cartodb-popup v2"> <a href="#close" class="cartodb-popup-close-button close">x</a> <...
1
vote
1answer
48 views

is there a way to save a temporary file as a permanent raster layer

I am trying to build a raster table for a temporary layer i created from an image difference on ArcGIS image analysis. Is there a way to save the temporary layer from this image analysis as a ...
1
vote
1answer
275 views

Why does Describe function fail on annotation layer with RuntimeError: Object: Describe input value is not valid type?

I am accessing layers in an mxd programatically and also accessing the layer properties using the Describe function lyr =arcpy.mapping.ListLayers(mxd) # gets me the list of layers in mxd desc= ...
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1answer
1k views

How to query all layers in ArcMap and get access to them by name or index?

I have ArcMap with tons of layers. Some of these layers may contain another layers with data (aka Composite layers) or they don't. The depth of composite layers in unknown. I need to query all layer ...
1
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0answers
60 views

First click layer selector doesn't work in CartoDB?

I'm working on an interactive map using CartoDB built of Leaflet.js. I added a layer selector which works fine after the first click. The first click just doesn't work, if I click the selected layer (...
1
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1answer
90 views

How to make one checkbox that shows multiple layers in qgis or qgis2web?

I need to create one checkbox in qgis (and qgis2web) that than will show 2 other layers. So basically i don't want to check two checkboxes in the layerlist, but i want to simplify this proces by just ...
2
votes
2answers
53 views

How to use loop to add georeferenced JPEGs from folder to mxd?

This is my first time using this site and I'm a bit new to ArcPy. I've looked around for a while but couldn't quite find the answer I was looking for. I have many folders with georeferenced topos in ...
1
vote
1answer
280 views

ArcGIS API for Javascript Not Adding Layer and/or Graphic during mouse event handler?

I am trying to add a graphic to my graphics layer during a map mouse event. In the javascript console, I can see that my graphic object is created and no error is thrown when I add the graphic to my ...
2
votes
1answer
56 views

Why QGIS 2.12 “forgets” selection colour opacity settings?

I have few vector layers which I need to edit frequently. I'd like to be able to see through the layer when it's selected. I changed selection colour from both: Project Properties General settings and ...
3
votes
1answer
2k views

Changing data source of layers with ArcPy?

How do I change the data source of all layers in a map document using ArcPy and Python?
0
votes
1answer
2k views

Accessing secure Geoserver layer with username password

I created Users, Groups and Roles in geoserver. And I set the user roles for my workspace. user1 can read user2 can write And I want to access my layers as anonymous like this: http:localhost:...
2
votes
1answer
26 views

Automatic selection of colored regions when digitzing choropleth maps

I am new to working with GIS. I have a raster choropleth map similar to the one displayed below. I want to create a shapefile from the map, where each layer contains all the countries that have the ...
2
votes
1answer
85 views

Arcpy Code result- “NaN”

When i run this code (in arcView 10.3) in order to check the data frame extent, i received "NaN NaN" result with the exact data frame. I don't understand why python print this out? I checked in http://...
1
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2answers
271 views

Points on Map overlapping/covering city and town names

I have a map with many points, these points map incidences of landmine accidents in Colombia. There are thousands of points and cover up parts of city and town names, in some cases the entire lables ...
4
votes
1answer
6k views

Converting *.lyr file to shapefile or raster using ArcPy?

I am using ArcGIS Desktop 10 and Python 2.6.5. i have created a "test.lyr" file, now i want to convert it either to shape file or raster file. i have created the "test.lyr" from "test0.tif" and added ...
0
votes
1answer
121 views

Printing ArcMap layers in black and white?

I am working in ArcMap 10.1. I would like to print a select few layers in black and white and have one or two layers print in color? Can this be done? If so how?
1
vote
1answer
67 views

In qgis2threejs html output select deselect the layers not working

I used qgis2threejs to output 3d model with a dem and another viewshed output. I want to tick untick the layers for displaying and not displaying the layer.But the select unselect option in right ...
1
vote
1answer
410 views

Geoserver api: how to determine a layers respective workspace?

I am using the geoserver api to find information about layers that are available. I am using: http://localhost/geoserver/rest/layers.json to get a dynamic list of all layers. If I then select a ...
2
votes
2answers
68 views

Update a group layer using arcpy

I work with several MXD'S and i try to update a group layer named "allHa" containing several layers with this code: import arcpy,os,sys,string import arcpy.mapping from arcpy import env env....
0
votes
4answers
130 views

How to add remote GeoJSON data to a Leaflet map as a new layer?

I seem to be having a problem parsing the GeoJson and adding the layer to a Leaflet map. var terrain = L.tileLayer('http://server.arcgisonline.com/ArcGIS/rest/services/NatGeo_World_Map/MapServer/...
1
vote
2answers
987 views

ogr2ogr - extracting S-57 layers

I'm trying to extract the layer DEPARE from an S-57 datafile and convert it into a shapefile. I'm using ogr2ogr from OpenGeo Suite 4.5 (GDAL 1.11.1) on Windows 7 64 bit. The problem is that when I ...
1
vote
1answer
142 views

How to properly draw and label overlapping polygons?

I would like to show overlapping polygons on a single layer. The polygons are coloured based on a property and labelled according to another property. The problem is then twofold: The polygons are ...
0
votes
1answer
312 views

Select by location in ArcPy?

i work with arcview 10.3 on 20 mxd's (each mxd has 25 layers) and i try to do select by location (with arcpy) and want to see a layers that are visible in the current map extent only. All Other layers ...
1
vote
2answers
613 views

QGIS Quickly switching overlapping raster images

I'm new to QGIS, and haven't used arcGIS in about 5 years, however I've just seen someone using arcGIS and was able to quickly switch between overlapping rasters when checking registration. The top ...
2
votes
2answers
73 views

Search MXDs with specific dataSource layer using Python

I work with ArcGIS 10.3 and I try to search a specific layer (with dataSource named "D:\desktop\Project\layers\1.jpg" ) in hundred of mxd's that spread in folder "D:\PROJECTS" and it divided to ...
1
vote
1answer
66 views

Duplicate a layer applying a filter in QGIS

Is there a way, using Python, to duplicate a layer in QGIS as many times as the single occurrences of a variable contained in a field and with a filter applied on the duplicated layer based on the ...
0
votes
1answer
416 views

Openlayers event cluster feature id does not appear on layer vector feature id list

My application's objective is to click on a cluster and produce a popup with a list of all placemarks clustered there where every entry is a hyperlink that closes current popup and opens a new ...
0
votes
1answer
159 views

Copying features from one layer into different layer using ArcGIS for Desktop?

I would like to have two different kinds of feature (lets say coniferous and deciduous woodland). To represent this I have two different layers that are different colours. In an edit session when I ...
1
vote
2answers
70 views

Redefining point shapefiles in MXD that have no projection and are located in different folders using ArcPy?

# Script to use Layers in MXD source file paths to locate and redefine projections import arcpy, glob, os, sys, arcgisscripting from arcpy import env, mapping path = os.getcwd() env.workspace = path ...
3
votes
1answer
77 views

Static maps API that serves roads/labels without basemap?

I am looking for a static maps API (similar to https://www.mapbox.com/developers/api/static/ ) that can serve the map without an underlying base layer. My intention is to generate images with the ...