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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58 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
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0answers
62 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
30 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 ...
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1answer
73 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
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1answer
49 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
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1answer
286 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 ...
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1answer
91 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 ...
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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 ...
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2answers
54 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 ...
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0answers
38 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 ...
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1answer
99 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 ...
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1answer
49 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> ...
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1answer
37 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 ...
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1answer
258 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 ...
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0answers
55 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 ...
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1answer
76 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 ...
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2answers
49 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 ...
12
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3answers
470 views

How many layers are too many layers in ArcMap?

I work on ArcGIS using a Citrix virtual software connection at work. It is dreadfully slow at times, and without any changes to the MXDs I'm working on, one minute ArcMap can be operating at a ...
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1answer
236 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
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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
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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?
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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: ...
2
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1answer
25 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
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1answer
77 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 ...
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2answers
247 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
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1answer
5k 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 ...
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3answers
29 views

Layer File data source

I have saved group of layers which reading from SDE DB as layer file when i open the layer file in any other MXD it takes the same SDE data source How i can make the Layer file with out data source ...
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1answer
74 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?
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1answer
56 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 ...
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1answer
392 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
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2answers
61 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 ...
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4answers
103 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 = ...
1
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2answers
822 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 ...
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1answer
114 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
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1answer
273 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 ...
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2answers
587 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
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2answers
66 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 ...
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1answer
60 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 ...
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1answer
365 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 ...
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1answer
113 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
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2answers
68 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 = ...
3
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1answer
72 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 ...
3
votes
1answer
27 views

QGIS: Mergin two layers always creates new attibute field

I want to merge several layers into one. Each layer has a specific Attribute field (type: GG, DO, eg.). In the merged layer QGIS produced a new Attribute field for each type. I want QGIS to but all ...
1
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1answer
45 views

Qgis layer renaming stays the same

I've been developing a plugin for Qgis, but something weird happend while renaming a layer, now whenever i add a layer using a button in my plugin, the layer is renamed with the last name I gave it. ...
2
votes
0answers
89 views

QGIS Space Syntax plugin with OSM data?

I'd like to do a space syntax analysis for a city I observe, but when I use the Space Syntax Plugin, the desired shapelayer roads doesn't show up. It's an OSM vector layer, what do I have to do to ...
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1answer
454 views

QGIS Layers Not Lining Up

I am new to QGIS, I have been using ArcGIS for most of my maps. I have two layers that are not overlapping properly. One is a shp file from a GIS clearinghouse and another from a delimited text ...
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0answers
42 views

Mapbox source without access token

I found mapbox source of tiles that doesn't require access token (http://a.tiles.mapbox.com/v3/mapbox.natural-earth-hypso/page.html#3/0.00/0.00). Does it mean that I can use it without view limits ...
2
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2answers
73 views

How to remove all transparency from all layers?

I am using ArcMap 10.1 and I would like to remove all transparency from all the layers in the map at once.
0
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1answer
46 views

Changing coordinate system of layer?

I am using ArcGIS 10.1 and I would like to change the coordinate system of a layer that is already attached to a drawing so that it matches the other layers.