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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27 views

Avoiding lost layers when using QConsolidate?

I want to save all the files in my project and the project file locally on my computer. The files are currently saved on a external hard drive. I have tried QConsolidate before, and it worked, but ...
0
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0answers
28 views

Right mouse button on Layer

I used QGIS in "Lisboa" and "Dufour" versions. From when I first updated to "Lyon" and then to "Essen", in "Layer Orden Panel" I no longer work the functions associated with the right mouse button to ...
1
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0answers
29 views

creating a new layer/selection based on the conditions in Python script? [closed]

Is there any easy way how to write a python script, which would create a new layer based on location from a border line and "if" condition? I have two layers A and B, both are made of several ...
1
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0answers
15 views

How to control layer visibility in the Map Composer Overview map? [duplicate]

I wonder if it is possible to choose which layers would be visible in the Overview Map loaded in the Map Composer. Note that this is already possible for the Overview Panel in the QGIS Desktop: for ...
0
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0answers
35 views

Comparison of polygon geometry of 2 layers (ArcEditor)

I´m facing the following Issue: I´m trying to find changes between 2 continuous polygon layers. Polygons that need to be compared dont have matching IDs - to explain, I have polygon X and polygon Y ...
2
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2answers
32 views

Printing selected Region of map with several layers in QGIS?

I creaetd a map with 6 vector layers (each is a .shp-file), the geometry type varies: 4 are polygons, 2 are lines. I would like to print a region - to be specific approx. 20 individual regions - ...
1
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4answers
64 views

When opening dwg files are there hidden fields by default in Layer Properties of ArcMap 10.3.1

There is a lot of fields in Layer Properties that are hidden by default when I open dwg file in ArcMap 10.3.1. Is there some properties that define which fields are visible in Attribute Table and ...
2
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1answer
39 views

MXD defined symbology not retained

I'm trying to create some layers from feature classes located in the geodatabase. The MXD is created, symbology on feature classes defined within ArcMap, but for some reason my symbology is not ...
-1
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1answer
50 views

Apply same symbology to many raster layers in ArcMap?

I have many TIFF files (100+) that need to have the same symbology using the unique value option. Is there a quick way in arc 10.3 to do this?
2
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0answers
44 views

QGIS Atlas zoom to intersection between two different layers

I have two polygon layers, one is about different land owners boundaries and is used for atlas generation, and the other is about forests inside each property. In atlas generation sometimes i want to ...
0
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1answer
47 views

How to add multiple text elements in ArcMap using ArcPy

I've been able to add a dynamic text element (with an element name of 'TestName') that reflects a layer name and that changes for each corresponding exported layer to a GIF. I am now trying to add a ...
0
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1answer
51 views

Is it possible to subtract two layers in MapInfo or MapBasic?

I have two tables, one is a cartographic map and the other is the map of all lakes. Some of the lakes are in-land and so they are not excluded from the cartographic map. I want to calculate the area ...
1
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1answer
18 views

Keep Unhandled layers in QGIS

I saved a .qgs file with home server postgis layers. Had to work remotely, but will lose unhandled layers upon opening the file. I can connect to these through my GeoServer, but I'm going to lose my ...
1
vote
1answer
50 views

Joining multiple polygons inside a single polygon in QGIS

I need to somehow "join" information from two shape files: zoning - these are large polygons indicating the zoning code for a moderately large area, typically hundreds of separately owned parcels ...
1
vote
1answer
18 views

Rename a Layer inside CartoDB

I would like to simply rename a layer inside CartoDB. I see buttons for the SQL Query, CSS code, and some HTML... but I don't know where to put my code. setLayerName('Test')
3
votes
1answer
77 views

Writing a custom function in QGIS to rank features

I have written the following custom function in python for QGIS, cobbled together from various sources. The aim is to use it in the expression editor to return the rank of each feature based on the ...
0
votes
1answer
86 views

Select by location using ArcPy

I try to select by location all layers that intersect layer named "frame", and then remove from the maps other layers that don't intersect it. Finally, i want to print the all the removed layers and ...
1
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0answers
46 views

Create Layer With Selected in QGIS

Came across this "Create layer with selected" button in the result for a Spatial Query in QGIS. And simply, this creates another layer from the same source with a query on the IDs. Does anyone know if ...
1
vote
1answer
52 views

How to create dynamic text in ArcPy that recursively reflects the exported layer name from a list of layers

I have a script shown below with the help from @Midavalo that exports irrig_0, citylyr, boundlyr as a GIF. Once this is done the script then exports irrig_1, citylyr, boundlyr as another GIF and so ...
4
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1answer
70 views

Making multiple layers editable in QGIS?

I am using QGIS and I want to eliminate fields from 300 shapefiles. All layers are loaded and selected. Is there a way to enable all 300 for simultaneous editing?
0
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1answer
68 views

Does leaflet support user defined Layer identifiers

It would be nice to be able to check for a layer presence or remove it without having to keep an explicit reference to it. To that extent I would like to use ad id for the layer that I can compute ...
1
vote
1answer
52 views

How to export specified layers in ArcMap using ArcPy

I am trying to export specific layers from an ArcMap .mxd. From the TOC below I would like to export "irrig_2, citylyr, boundlyr" as a GIF. Once this is done the script would then export "irrig_1, ...
2
votes
1answer
39 views

lyr.datasetName works with “CURRENT” mxd but not with mxd path

I have some mxds in wich I want to set all the layers a layer description. This works as far as I use the code with current mxd, but if I give a path it has no results, and I also don't get any error ...
1
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1answer
48 views

MySQL database layers invisible in QGIS

I'm encoutering a problem when connecting a MySQL database to QGIS. When the connection is established and a layer is imported, the layer itself will not render and thus isn't visible. The layer ...
0
votes
0answers
39 views

How to change the color of a polygon in ArcPy?

I am trying to write a script that changes the color (fill and outline color) of a single polygon in a layer using ArcPy. Is this possible without importing properties from a reference layer file ...
1
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1answer
26 views

where are the rasters that make up a layer?

I used raster calculator to add up 12 rasters made up of 0's and 1's to make a fire frequency map. Then I saved the output as a layer (lyr). However, I need the raster output. Did I add it up ...
7
votes
1answer
116 views

Duplicate layer using Control button on keyboard

I noticed in QGIS 2.14 I can hold Ctrl key and drag to duplicate a layer. But this seems to create a copy linked from source layer. Unlike if I use "Duplicate" in context menu this procedure reflects ...
0
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1answer
48 views

Spatial selections using Python in ArcGIS

I am trying to perform a spatial query using Python in ArcGIS, here is my code: I'm getting the following error: Traceback (most recent call last): File "C:\Users\acarr\Documents_PYTHON ...
1
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1answer
44 views

Use spatial queries on multiple layers in QGIS

Is there a way to perform spatial queries on multiple layers in QGIS without going through an external database? I would like to perform SQL-like queries on layers imported in QGIS directly, but can't ...
1
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1answer
49 views

Finding layer file used to add layers to MXD in ArcPy?

I work with layer that located in G:\PROJECTS\bneyAyish\gis\lyr\New File Geodatabase.gdb\polygon, and I created a layer file and located it in G:\PROJECTS\bneyAyish\gis\lyr under the name ...
0
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1answer
22 views

How to know the date of adding specific layer to a map in ArcGIS?

Is there a way of knowing when specific layer have been added to MXD file? I work with MXD file with three layer with the same name: "polygon": i searched in the source tab (in the layer ...
0
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0answers
20 views

Layers do not overlap [duplicate]

I am new to ArcGIS. I have some layers. Three of them perfectly overlap and the fourth does not. I have tried with the Projection tool and I have tried so many things and nothing. When I check the ...
4
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2answers
116 views

How can you align two shapefile layers in QGIS

I am a very beginner with QGIS. I would like to know how to align two shapefiles in QGIS. The image below shows the mismatch:
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0answers
59 views

Display Leaflet WMS Layers from same source on different panes

I am using the Leaflet WMS plugin to add in layers to my map via a WMS. I have the following code below that adds all of the layers using the same source but as separate layers. However, I want to ...
1
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0answers
21 views

Qgis, resolve bad layers

How to resolve bad layers and locate files on my computer?
1
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1answer
50 views

Is it possible to map a leaflet provider (precipitation) on top of a polygon in an interactive map?

I've just started using the leaflet package in R to create interactive maps and I'm wondering if it's possible to plot one of the leaflet providers on top of a plotted polygon rather than under it as ...
0
votes
1answer
28 views

Arcpy - LayerList - Count/Length [closed]

I use arcpy to load all layers in the current map document, and I need all layers but not the last one (this is my layer for the symbology template). How can I access the length or count of the ...
3
votes
0answers
29 views

gdal_translate multiple GDAL_PDF_LAYERS_OFF entries gives error

The documentation says that GDAL_PDF_LAYERS_OFF takes a list of comma separated layers. Examples look just like what I am trying to do. Executing the following gives an error FAILURE: Too many ...
6
votes
1answer
53 views

How to recursively get all lyr file properties from a group layer on disk

I'm writing a python script tool that will recursively search through a folder and all subfolders and find all .lyr files. Ultimately, I'm writing a CSV file which contains the path of the .lyr file, ...
2
votes
1answer
34 views

(Geotools) Get 2 Selected Layer out of the MapTableLayer

I have a Method that calculates the Area of 2 Layers of different topologic Relations, which needs 2 collections. In the Button where I use this method, I want to get just 2 of the selected Layers in ...
4
votes
1answer
79 views

Can I use .crd and .dwg files as QGIS data sources?

I want to use my autocad files(.dwg) and my field files (.crd), and want to know if they are compatible with qgis.
3
votes
1answer
105 views

Nearest distance between point layer and line layer, QGIS

I have two layers , line and point layer. I need to make line layer which connect all points to nearest line features? Is someone made a plugin for qgis? This is very important tool which missing in ...
2
votes
1answer
71 views

Issues with toggling layers with mapbox.js

I am having issues with toggling map layers with mapbox.js. Using the code from [https://www.mapbox.com/mapbox.js/example/v1.0.0/layers/] it pulls the basic mapbox base maps ex. mapbox.outdoors or ...
1
vote
0answers
33 views

Android WebMap Popup Viewing not showing my layer info

I used the code for WebMap Popup Viewing from ArcGIS for Developers (https://developers.arcgis.com/android/sample-code/webmap-popup-viewing/) and I just changed the map URL with a map I created and ...
2
votes
1answer
38 views

House numbers on roads layer

I have a problem regarding the street numbers in OpenStreetMap. I have downloaded the .osm file of a city from the open street map web. Then with QGIS I have obtained a shape file with roads and a ...
0
votes
1answer
32 views

How to get detailed informations about a layer (SRID, extent, …) in Geoserver REST API?

I'm trying go get detailed informations about a layer using the Geoserver REST API (I'm using Geoserver 2.8.1), but according to the online API documentation, I can only get basic informations such as ...
3
votes
1answer
41 views

Can a Relate within an MXD be detected programmatically using ArcPy?

I would like to know if it is possible detect relates in an MXD using arcpy. Similar problem as the question below, but for relates instead of joins. Can Join be detected programmatically by ArcPy? ...
0
votes
1answer
53 views

Hardwire definition query on layers in mxd VB.net

I am creating a tool that applies definition query to certain layers of the mxd. The user clicks the button and it should hardwire the definition query into the layer. This is useful if there are many ...
1
vote
0answers
48 views

External SLD file for OpenLayers [closed]

I'm creating a application with Geoserver, OpenLayers and Postgis. At some point, the user can select his own style for a layer. I've succeded to make a php script to write to a file the SLD code. ...
1
vote
1answer
152 views

How to iterate through layers of an MXD?

I know model builder will not iterate through the layers in an MXD, which is kind of fundamentally stupid if you ask me, but I still need to do exactly that. I am not a strong coder but i understand ...