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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10 views

Maximum likelihood classification- changing class colour with every layer

I created a signature file, where I defined 4 different classes, which I named and coloured specifically. When I try to use the maximum likelihood classification tool for other layers, the classes ...
2
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0answers
46 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 ...
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1answer
23 views

Can I save the symbology of all the layers in my mxd so that I can quickly revert back to a certain “look”

I am using ArcMap 10.2 and would like to set multiple variations of the layers symbologies. In autocad this would be the equivalent of setting the layer state.
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1answer
12 views

Arcpy MakeFeatureLayer_management issue using SQL condition

I have a lines shapefile. I made a small code to select some of its elements and turn them into a standalone layer. The code is like this: arcpy.env.workspace = r"C:\MyDirectory\Mygdb.gdb" network = ...
2
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1answer
398 views

Programmatically get Layer source properties DataType with ArcObjects?

I am trying to access the DataType property of a Layer in the TOC in ArcMap. The layer is added from a web service as an IMapServerRESTLayer. The Data Type property is listed with Layer -> ...
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12 views

Lava simulations, layers totaled [on hold]

I have a number of lava flow simulations. Many overlap and so cannot be seen clearly. I am hoping to produce a layer that includes all the simulations and indicates the areas of overlapping lava flow ...
1
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1answer
19 views

lyr replaceDataSource not reflecting

The changes I made to the MXD with ArcPy is not reflecting the changes in ArcMap. arcpy.env.workspace= "C:\Users\UserID\Desktop" mxdlocation=os.path.join(arcpy.env.workspace,mxdname) mxdloc = ...
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0answers
45 views

VectoreLayer Still Empty even if attribute has been set with value

I am working with the qgis api c++ 2.8.2, my application is written in QT 4.5.3 / C++ I had to create a vectorlayer in memory with attributes and features and export it to a shp file to import it in ...
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1answer
293 views

Pass coordinates parameters to geoserver pgrouting service from Leaflet wms tile layer

I've configurated a pgRouting service in Geoserver, following the steps on the documentation it's easy to accomplish. Reading the documentation, existing examples, etc.. I've come to undestand how ...
4
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1answer
81 views

How to load multiple vector layers into QGIS' map canvas using python scripting?

I am trying to write a standalone script in python to create a QGIS map canvas. The vector layers I am attempting to load are Shapefiles. Currently, I am able to load each vector layer, add them to ...
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1answer
34 views

How do I make two layers of point data align perfectly?

I have two point data sets that represent the same business locations, however, the points are slightly off for one of the two layers. As in one layers points are in the correct position over the ...
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0answers
15 views

display buffer turf only when i click on a layer [on hold]

I want to display turf buffer only when I click on a layer var pt = { type: 'Feature', geometry: { type: 'Point', coordinates: [lat, lng] }, properties: {} }; var unit = 'miles' var ...
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2answers
23 views

How to Close all Layers but keep Tables on MapInfo using MapBasic

I'd like to know how to close all the layers on MapInfo but keep the tables open using MapBasic code. The idea is to be able to keep the tables open so that I can create multiple different maps using ...
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1answer
2k 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 ...
-1
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0answers
9 views

Script to get streamflow data from (Geomet and RPN-WMS)? [on hold]

I need to have streamflow data from (Geomet and RPN-WMS) (Government of Canada), it is my first time using WMS servers. do i need to erite a script with Getfeature ?
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2answers
52 views

Mapbox GLJS - group layers

I'm trying to build an interactive map, without any knowledge in javascript, and i found myself a bit lost in this large world. I've already designed my style in mapbox studio. And now, trying to ...
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1answer
21 views

Can I split my data based on the polygons in a different layer?

Carto has a built-in dataset with polygon data for UK administrative regions. I have put another layer over this, containing several thousand data points (postcodes). Is there an easy way to find out ...
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1answer
187 views

Publishing QGis project on Geoserver

Is there a way to prepare a project on QGis with many layers and to publish it under wms service on Geoserver? Thank you for responses
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0answers
27 views

Problem in layer overlapping (qgis)

I want to plot gps pts on qgis (version 2.14.1). I have added the vector layer of SE Asian countries, and added the delimited text layer of my gps pts which included species name, lat and lon. ...
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2answers
664 views

Is there a way to display more than 10 categories in cartodb?

I'm creating a map in CartoDB. I have roughly 18 categories, but each of those has a sub-category, which is 'yes' or 'no'. Currently I am displaying the 18 categories in two different layers to get ...
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1answer
24 views

Leaflet, changing base map CRS

So i am using leaflet in order to create my project, which is a world map that certain layers would be add on top of it. I am wondering whether I should change the CRS property of the map object, ...
2
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1answer
33 views

Iterate through layers of an MXD

I found this, under the topic How to iterate through layers of an MXD? answered by Midavalo I wanto to know if its possible to change something in the second line, to iterate through all data frames ...
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0answers
7 views

Loop Quality layers of Modis in R

I want to parse quality layers of Modis MOD13Q1 in R. I´m using a code from another question here! and it works fine, but i want to loop it for 300 files. I grouped them in stack of rasters and tried ...
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1answer
22 views

Showing only 1 layer at a time in CartoDB

Is there a way in the free CartoDB to set the layer selector so that you can only select 1 layer at a time? When one layer is selected, deselect all other layers.
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3answers
37 views

Layer File data source

I have saved group of layers which are 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 can I make the layer file without a data ...
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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 ...
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0answers
27 views

Add qlr file in QGIS- problem

I work with a polyline layer: and the layer located in "G:\desktop\qgis\lyr". After i save the layer in qlr file and saved it in "G:\desktop\qgis\lyr", i try to load the qlr file with "add from ...
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1answer
1k views

Changing color of symbol in UniqueValuesSymbology object using ArcPy?

I have an template mxd I reference with several pre-defined layers. The only variable I need to modify is the color of certain symbols in the layer. I have tried to modify and dig around the Symbology ...
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1answer
47 views

Grouping layers in Table of Contents in ArcGIS for Desktop?

I'm trying to group layers in the table of content so that I can expand or collapse them as needed. Not sure how. I'm using ArcGIS 10.3 for Desktop.
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1answer
59 views

How do I access graphic information from an element in an ArcGISDynamicMapServiceLayer? (Flex)

I've got a Flex application that shows pipeline data on a touchscreen map (for an exhibit). The spec mandates that tapping an element on the map (such as a power plant or substation) will trigger a ...
1
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1answer
312 views

Automated map export, iterating layers and editing text

So just a beginner here. I've been automating a few map exports with ArcMap, I've used stack exchange to mash together some scripts to export maps with one FC symbolised using different fields and ...
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0answers
16 views

Generating detailed layer properties report [duplicate]

Would anyone advise me how to generate detailed layer information report in ArcGIS 10.3. I mean the details described by layer properties window for a layer like Source, Display, Definition Query, ...
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8 views

Custom map : Layers, sublayers and public transport directions

My objective is to create a custom map for public transport with several layers in it e.g: Under a layer named 'Leisure', I can have several bus/train/boat routes(multiple steps may be involved) I am ...
2
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1answer
215 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 ...
0
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0answers
13 views

GeoServer: Composite and blending for specific layer in WMS call

I use the destination-in vendor option to use a polygon layer like a mask, so that only some parts of a raster layer are shown. The sld is defined for my polygon layer. In my WMS call a specify both ...
3
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1answer
70 views

ArcMap can't switch layers order

I have 5 different layers. I would like to change the order they are drawn. I read that (and I also used to) simply select and drag the layer from in the position I want. Nevertheless, now I am trying ...
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0answers
26 views

Files added using *.qlr result in bad layer after save and reload

I'm converting CAD to Shape (separate point, line and area shapes per *.dwg in a folder). In the process I parse the shape info to a donor *.qlr (to the same folder). The qlr is a donor file with ...
13
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3answers
524 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 ...
0
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1answer
79 views

Coordinates from Excel list

I'd like to import Coordinates from an Excel list, for this reason I saved the excel sheet as an .csv ant tried to import it via "Layer --> Add delimited text Layer". The points are imported, but with ...
3
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0answers
32 views

PyQGIS select layer by original table name

As far as I see, on QgsMapLayerRegistry.instance() there is a method to select layers: mapLayersByName(Qstring) and the method mapLayer(QString) respectively, wich accesses a layer by its id. ...
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2answers
42 views

Removing duplicated layers using ArcPy?

I work with ArcGIS 10.3.1. I my map i have 200 layers. some of them repeat several times. Is it possible with python code to remove all duplicated layers from table of content, that have the same ...
0
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0answers
11 views

Setting “current layer” in Openlayers 3

I have an ol.Map in a layer called TilesLayer, displaying the OSM tiles and a MarkersLayer on top of that displaying draggable markers. Clicking on TilesLayer causes a new marker to show in ...
1
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1answer
232 views

Setting transparency of layer group with Python in QGIS?

How can I set the transparency for all layers within a group of layers? I assume this will require the use of a FOR loop in the Python Console. Based on How to set the transparency for multiple ...
8
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1answer
542 views

Is it possible to have dynamic layer names in QGIS project?

I have a QGIS project with layers, based on PostGIS SQL queries that use current date. Since the data in the database changes, these queries return different data every new day. Is it possible to ...
0
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0answers
13 views

Two layers of the same region with the same coordinate system does not lay in the same place! [duplicate]

I know that my problem seems to be frequent but I couldn't find any good till answer. I have two layers for the same place (area and roads) in my ArcGIS, both of them has the same coordinate system ...
2
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1answer
87 views

Sunlight layer into CartoDB

I have a list of tweets on a torque map made with CartoDB. I want to add an additional layer that shows the sunlight around the world at certain times, similar to the Twitter #sunrise map found here. ...
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2answers
450 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 ...
2
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2answers
533 views

Dynamically add layer(s) to Layer Group

I have an Openlayers 3 app and users can retrieve stored routes from a web service and display them on a map. Currently each route is added to the top of the index but I'd like them to be inserted ...
1
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1answer
274 views

geoserver/openlayers: multiple layer geotiff

I have a geotiff file with multiple layers (46 layers), each layer corresponding to a different date (the geotiff layers corresponding to sea surface temperature, 1 layer per year). I imported this ...