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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68 views

Openlayers 3 - click under geolocation layer

I am using geolocation feature of Openlayers 3.13, as in the examples. (http://openlayers.org/en/v3.13.0/examples/geolocation.html) However I also have queryable point layers, and when I track the ...
2
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1answer
75 views

Repoint feature layers from one SDE to another

I am trying to repoint layer (.lyr) files to a new SDE connection. In a test project folder I have two test layer files. When using lyr.findAndReplaceWorkspacePath() the script runs with no errors, ...
3
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0answers
14 views

Problem Importing CAD features using arcpy.MakeFeatureLayer_management?

When importing multiple CAD drawings using "arcpy.MakeFeatureLayer_management" and "arcpy.Merge_management" I encountered a problem. Drawings that have line weights and elevation values assigned to ...
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1answer
36 views

Locating and adding state layers to a QGIS map.

If I wanted to add layers for a state (Indiana) in a program like QGIS so I could produce several maps (Infrastructure, Water Resources, Mineral Resources, and HAZMAT concerns), how would I locate and ...
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2answers
60 views

Switching out layers but keeping the order the same (see figure) with ArcMap and Arcpy

I need to update the table of contents for a given .mxd by keeping a certain order but switching out the contents. I can bring in the new feature classes as map layers, and delete the old map layers ...
3
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1answer
67 views

Using Feature Dataset with ReplaceDataSource gives ValueError: Layer: Unexpected error?

I'm attempting to replace the data source of a unsourced layer with a mxd. The issue I'm having is that the Featureclass "APPL" is contained within a Feature Dataset. When the feature class is outside ...
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0answers
26 views

Can I overlay a CartoDB visualisation on Bing Maps base?

If I am using Bing Maps as my base map, can i overlay a CartoDB visualisation (that I created earlier) on top of it? If so how do I go about doing that? The example on the cartodb site only refers to ...
3
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1answer
68 views

Styling a shape file obtained from S-57 data

I have downloaded S-57 data for a particular region and intend to publish this as a layer in geoserver. To do this I used the ogr2ogr converter utility to convert S-57 data to a series of shape ...
2
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1answer
47 views

Images in my Click Info box are not appearing in both published CartoDB layers

I'm using the simple web version of CartoDB. I uploaded two datasets, each is a layer and both have the same image URL type (URLS for .png Twitter account images). When I visualise the maps ...
2
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1answer
83 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
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1answer
167 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 ...
2
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2answers
107 views

AttributeError: 'Layer' object has no attribute 'listLayers'

I want to use the result of OD cost matrix for my further calculations. However, whne I try to extract the sublayer "lines" it returnes an error AttributeError: 'Layer' object has no attribute ...
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1answer
90 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 ...
1
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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
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2answers
98 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 ...
1
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0answers
70 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
32 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 ...
2
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0answers
79 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 ...
3
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1answer
58 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 ...
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1answer
123 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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0answers
40 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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2answers
61 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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1answer
42 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 ...
0
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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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0answers
58 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
84 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
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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 ...
6
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1answer
109 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 ...
12
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3answers
491 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 ...
2
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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
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1answer
83 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 ...
0
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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 ...
0
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1answer
97 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
60 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 ...
2
votes
1answer
59 views

Getting selected layer name in QGIS Modeler

If I have a geoalgorithm in my model and I want the value from one the parameters, then how can I get it? For example I want the layer name in the parameter layer in below figure so I get the value ...
1
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1answer
88 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 ...
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1answer
46 views

Remove layers using python- path orientation

Expanding on my previous question Code error - remove layer using python, i try to remove layers from mxd's (in ArcMap 10.3, python 2.7.8), that don't appear in the data frame with this code: import ...
2
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2answers
62 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 ...
0
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4answers
109 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 = ...
0
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1answer
21 views

Removing existing backup layers and renaming current live layer in ArcSDE

Looking at the attached screenshot of Catalog, there are the file "CRT_CANAL" and many backups. The aim of this code is deleting old backups in the ArcSDE database, renaming the existing "CRT_CANAL" ...
2
votes
2answers
71 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
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1answer
62 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 ...
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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2answers
69 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 = ...
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1answer
46 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. ...
3
votes
1answer
74 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 ...
0
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0answers
48 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
91 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
53 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.
7
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2answers
433 views

Displaying legend item as polyline instead of polygon in ArcMap?

I am using ArcMap 10.1 and am trying to create a legend that will display a polygon layer as a single line.