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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7 views

CMV LayerControl configuration

I've been reading through the help and readme.md and playing with the configuration options for the CMV LayerControl and I'm pretty confused by the possibilities. It seems to me there are at least 2 ...
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1answer
74 views

External layer switcher and layer order

So I'm using an external layer switcher because I need it imbedded in a bootstrap dropdown menu. It works really great except for one thing.... when I change between viewing my base layers, the ...
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1answer
42 views

Add layer to mxd files ignoring specific item- arcpy

I try to add layer (abc) to several mxd files with arcpy and ignoring mxd file which called "land use" . I work with arcview 10.3 : import arcpy,os,sys,string,datetime import arcpy.mapping from arcpy ...
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1answer
943 views

Draw order (zIndex) of OpenLayers polygons and points in the same layer

My question is similar but slightly different from this one: http://stackoverflow.com/questions/5003349/openlayers-vector-features-z-indexing I have an OpenLayers Vector layer which contains polygons ...
3
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1answer
29 views

How to remove a feature from a layer created with “Make Layer From Selected Features”?

In ArcGIS desktop, I select some features from a feature class (say with the "Select By Location" function), and then right-click and choose "Selection--> Make Layer From Selected Features"(online ...
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1answer
38 views

Select by location-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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40 views

Data on European countries?

I am looking for any spatial data in the following cases: Spain (Cortes de Pallás 2012 wildfire in Valencia), Sweden (Vastmanland wildfire 2014 area), Netherlands (Strabrechtse Heide 2010 area) and ...
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0answers
14 views

Need to add an Image over my map

I am working on loading an image from my computer on my map. Using map.addLayer(). No example of ol3 is of help. Can anyone please help me with adding an Image in a layer over the ol3 map?
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1answer
162 views

OpenLayers - cannot set layer opacity

I have the following problem: by default, you can simply change the opacity of layer by writing for example: layer.setOpacity(0.3); But when I add it to my map SelectFeature controls, my layer is ...
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2answers
187 views

How to query postgres with gis to get GeoJSON for GeoJSON tile layer?

I have a postgres database with one table like the following: CREATE TABLE post_pl ( gid serial NOT NULL, zip character varying(5), zip_n integer, city character varying(50), geom ...
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0answers
18 views

Feature Rotation Exception

I am getting an error when I try to change the value of a feature's Rotation Value. I have a schematic feature that I would like to rotate by changing the field's ROTATION value, but everytime I try ...
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2answers
7k views

Using Google Maps as layer in ArcMap?

Can I use Google Maps as a layer in ArcMap? Is it possible?
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2answers
57 views

How to remove layers that are not in visible df extent

I am working on ArcMap 10.3 and I have a map with 50 layers in it. I am trying to check if layers are in a data frame. Unlike How to check if layers in a dataframe with Arcpy, I want to define the ...
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1answer
56 views

Cause of ERROR 000732: Input Layer: Dataset plan does not exist or is not supported?

I have several mxds (located in C:\Project ) that have 250 layers each. All the layers as the same name- "plan" and they all in group layers like that (added picture for example): I try to change ...
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1answer
366 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 ...
2
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1answer
173 views

How to load a *.qgs file in a C++ QGIS standalone app?

I'm using QGIS-2.4.0 API to develop a standalone app by C++. I saved a test.qgs file in QGIS Desktop software, in the project, there was one layer and it was visible. Then I loaded the test.qgs ...
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1answer
37 views

How to add graphics to map at lowest level?

I am able to create graphics and add them to the map, but they are getting added as the top-most layer. The labels (if active) of another layer get hidden due to this. I want to know how to add ...
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0answers
15 views

“No data available” on hover

I have the following map: https://aressk.cartodb.com/viz/408dd3ea-deea-11e4-9d17-0e9d821ea90d/embed_map It has two layers. On the Waypoints layer, I have Hover turned on for the Info Window. On the ...
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1answer
35 views

How to remove a layer and its legend in a standalone pyqgis application?

In continuity in my question "How to add a legend to a canvas in a standalone PyQGIS application?" > In every addition of a new layer in my standalone application, the legend lengthens and becomes ...
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1answer
260 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 ...
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1answer
44 views

GIS information on worldwide cases of wildfires?

I am developing some case studies on wildfire cases around the globe, some examples include California (2007), Australia (2009), Moscow (2010), Valparaiso in Chile (2014), and so on. I was wondering ...
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1answer
136 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
27 views

How do I take a contour .shp file and create a separate layer for each elevation?

The end result is to have a .dxf file in which each different elevation resides in a different layer. If at all possible I would like to be able to do the organizing in tile mill, or through some ...
2
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2answers
477 views

How does Leaflet layer ordering work with CartoDB layers?

All, I'm trying to figure out how Leaflet layer ordering works when you have layers coming from CartoDB. I have a map with 1 polygon layer (cartodb), 3 point layers (cartodb), 1 basemap layer ...
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1answer
1k views

Marker layer not responding to events in OpenLayers

I have multiple layers in OpenLayers: three vector layers, one google map layer, and a marker layer. I registered feature selected event to all three vector layers (which works fine, but btw is that a ...
3
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1answer
1k views

legend groups and layer position/order qgis 1.8

I'm tring to programmatically create layer sequence also using groups. Simple python code: layer = QgsVectorLayer("004cp000.shp", "004cp000", "ogr") QgsMapLayerRegistry.instance().addMapLayer(layer) ...
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2answers
281 views

Using Qt Designer to Create a Form in QGIS that can search for a specific point in a layer

I would like to ask if you can create a form in Qt Designer to create a form that can search for a point on the map using data that the user will provide such as the Name. I am currently creating a ...
2
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1answer
2k 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 ...
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2answers
45 views

SaveToLayerFile does not properly save symbology

I'm trying to save a symbology from a layer, but any way I try to do it, it just gives me a unsymbolised feature shapefile when I try to add the newly created .lyr file. Anyone have any idea why this ...
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1answer
166 views

Where to upload layers in geoexplorer?

I just install opengeo suite (boundless) in my machine and try to explore it. I followed the instruction in user manual and I encountered a problem. In "Load your data with GeoExplorer" part, after ...
3
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2answers
373 views

How to get layer type in OpenLayers 3?

I would like to iterate through all of the added layers in an ol.Map instance and only select the vector layers. So far I could get the individual layers with the a property of the resulting object of ...
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1answer
165 views

OpenLayers 3 - Monitor layer loading progress

I'm doing an upgrade from OpenLayers 2 to OpenLayers 3. In OL2, I was monitoring the loading progress of layers with their loadstart and loadend events. With grid layers I was even able to show a ...
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1answer
140 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 ...
2
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1answer
60 views

Go through items in a composer legend (QGIS 2.6)

I'm trying to develop a plugin in QGIS 2.6, which opens a composer, add a map and a legend, and (among other things) adjusts the legend. Is there a way to go through items in a composer legend with ...
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0answers
33 views

How to define layer in QGis like in AutoCad?

I have imported a dxf file into QGis. While the importing processes split my dxf file into three layers - Point, Linestring and Polygon, which are different from the layer in AutoCad. I found the ...
7
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2answers
213 views

Load third-party APIs only when the corresponding map layer is requested?

OpenLayers allows multiple map layers to be hosted on a common platform. If the map application supports a wide variety of maps, say from Google, Yahoo and Microsoft, I find that upon initialization, ...
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1answer
60 views

ArcGIS Feature Class verse Feature Layer

In general is it better (more efficient) to work with Feature Classes (FC) or Feature Layers (a feature layer of a FC). I know when I construct model I always (or generally) work with feature layers ...
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1answer
120 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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2answers
66 views

Referencing layer in Table of Contents using ArcPy?

I'm looking for the best way to reference a layer in the TOC using arcpy and, if it is possible, that is different than the following: mxd = arcpy.mapping.MapDocument("CURRENT") df = ...
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2answers
83 views

Using Python to export multiple layers to .pdfs

I have found a solution to the issue below. The problem had to do with coding GetParameterAsText without actually using it as an input in a tool. That was the reason the raster layers wouldn't turn ...
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2answers
34 views

SaveToLayerFile failed - “value is not a layer”

Tried doing a SaveToLayerFile on a layer in a workspace, but it confusingly says it's not a layer. I know it is a layer because the script can access lyr properties (e.g. name) and all of the ...
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1answer
171 views

Define spatial reference of layer in ArcGis JavaScript API

I get an error "Map: Geometry (wkid: 3301) cannot be converted to spatial reference of the map (wkid: 4326)" when I want to add only graphics layer. I found that spatial reference for a map is defined ...
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0answers
21 views

OpenLayers get feature from layer at viewport position

How can I get a feature from layer at a viewport position, in openLayers 2.12. For example something like... Layer1.getFeatureAtPosition(x,y)
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2answers
138 views

How to request group of layers from Geoserver with turn off/on capabilities? Geoserver layer organizer

I would like to organize my layers by topics, and for each of them (if chosen on the client-side), I would like to request a single-tile image, which contains the predefined layers in the correct ...
0
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3answers
82 views

How to separate states in USA file using ArcGIS for Desktop? [duplicate]

I have found a few different files containing the entire United States, with attributes including states. Is there a way to separate the states out into their own files (perhaps in one file ...
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0answers
7 views

getFeatureFromEvent from multiple layers simultaneously in OpenLayers

I'm trying to return multiple features from two layers from a user click (one feature from each layer)? I'm using openLayers 2.12. I have 2 vector layers containing polygons, and a container layer ...
3
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1answer
84 views

Is it possible to add a raster file as layer from an URL?

I have several geoTIFFs stored on a server that I can access through http. I would like to add them as raster layers analogous to adding a local raster file through the "Add Raster Layer" button, but ...
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1answer
48 views

How to iterate through feature class to produce multiple point density files in ArcGIS?

I'm trying to create separate point density layers for each feature within a feature class owning to differing density characteristics within each feature. I would like to be able to accomplish ...
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1answer
113 views

Problem with snap layer when in name is space

I'm trying to make a option, where user can choose layer to snap. All is okey when layers names are without space, but if in name is space (like 'something layer name') snapping does not work. How can ...
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0answers
25 views

Update shapefile name with layer name

I had a layer that I split by fields. The resulting files were given a name. I updated the names of the resulting layers in QGIS but have realized that the shapefiles have not been updated ...