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Questions tagged [layers]

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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34 views

TileMill-style based on the country the objects belong to

Is it possible to have different TileMill stylings in different countries? I need for instance different colours for highways based on the country the highway is in. Is there a best practice solution ...
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49 views

Many layers from a unique KML file? (OpenLayers)

I have a KML file generated from a server that contains many networks. I want to know if is it possible to generate one layer for each network from this single KML file?
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153 views

Arcscene export issue: only upper layer showing up

I have created a 3d visualization with ArcScene 10.1. I have 1 hillshade of a portion of an area, which take elevation ifno from DEM of the same area. Also, the DEM is coloured and overlayed onto the ...
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165 views

Alternative satellite and hybrid layers for Europe published on WMS

For an application I am building I require to show satellite (high resolution) and street view layers, preferably also a hybrid view. Unfortunately, due to the application not running on a typical GUI,...
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35 views

Can QGIS2 refresh layers without the need to reclassify each layer individually?

I have a set of layers which I'd like to have refreshed each time I open QGIS2.2.0 (Windows 7). Each of 14 layers (polygons) is linked via a join to a csv file with no geometry. The layer displays a ...
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58 views

Icons of different layers cover each other in ArcMap?

I have converted 6 KML files (including a set of points) into 6 layers by ArcMap 10. For points in each layer, I have considered a special icon with a specific color. I also decreased the size of ...
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516 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 ...
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0answers
773 views

How to add a MSSQL spatial layer using Python?

I'm having difficulty adding a MSSQL spatial data layer using Python. The database is password protected, and I can add the layer without any problems using the built in feature, but I can't make it ...
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174 views

qgis 1.8.0 crash when starting qthread

I am trying to update a vector layer attribute table using QThread. i connect a pushbutton click with a slot to start the thread: def EGSupdateAttributeTable(self): AttUpdateEGSThread = ...
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115 views

Sources for meterological data with high resolution

I was running Maxent on an endemic species of andaman and nicobar.But the climate data I have from worlclim.org ( tile number 29 ) is not of high resolution and thus I can't see the distribution ...
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0answers
172 views

Saving transparency settings in KML?

Is it possible to save a KML layer's style? My layer is set to 50 % opacity and I want to save that setting into the KML-file. The plugin qgistokml can´t yet do it, and only work with points.
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150 views

QGIS layers not adding properly

using QGIS 1.8.0 lisboa on windows 7 pc adding vector layers and they are not adding properly they don't show up in the layers list but they are there when I happen to merge the the layers altogether,...
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142 views

proportion of image layer in OL

I tried create map with single image used OL. But I have a trouble: image in map has a wrong proportions. Img: 1540 x 1481 Img in map: 2858 x1481 My js code: $(function (){ var map = new ...
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449 views

Layer set visible

I add this layer like this: var POIData = new esri.layers.ArcGISDynamicMapServiceLayer("https://mysite.com/ArcGIS/rest/services/POI_Data/MapServer"); map.addLayer(POIData); POIData.hide(); I want to ...
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0answers
105 views

Get layers and apply renderer to layer list from SDE ArcMap

I have the code that gets the layers from SDE, but when I add them to the map they have a different symbology. There are about 80 layers and I am accessing the SDE by getting the workspace from a ...
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0answers
270 views

Hack to change data source of a layer file in ArcGIS 9.3.1 with python?

I'm looking for a way to change the source of my layer file using python. Actually I want to do this because I need to re-use a XSL template which is defined under the tap HTML popup of the layer ...
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485 views

Using Google Maps with OpenLayers for some zoom levels

I've had a search on here to see if this has come up but I've not found anything, sorry if this is a duplicate. I'm trying to use the Google Maps layers with an OpenLayers site, but not for all zoom ...
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654 views

pdf google maps export

In my php+postgis+geoserver+OL application I have to export a map in a pdf file. This map has two layer: the base is a google map layer and a vector layer as overlay. Is there a way to make a pdf ...
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1answer
89 views

Attribute Lost with CopyFeatures_management()

I have a Network Analysis Layer and I would like to export one of its classes as a .lyr file. Doing this in the GUI is easy enough, just right click and export as a layer. However, in arcpy and ...
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15 views

Open QGIS Project in both Linux/Windows

My company has workers that use Windows and Linux to manage a QGIS project. However, when we use the same project created in different operate systems the layers lose file paths. Is there ...
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42 views

Designing small letters under words in QGIS

I want to design small letters under words in QGIS when I designed the labels (attach picture). Is there any way to do it?
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0answers
12 views

Aggregate layer not loaded on GeoNetwork

I try to load an aggregate layer WMS from GeoServer on my GeoNetwork as base-map (i have changed the config-viewer.xml file) but an error displays that the tile is not found. Moreover when I try to ...
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1answer
30 views

Deleting values minor of 0.31 in NDVI raster layer in QGIS

In my research I have a Ndvi raster layer, and I want to delete the values corresponding to bare soil, which are those minor of 0.31. Therefore, I will obtain a new raster layer with those values ...
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12 views

After using Apply Symbology From Layer in ArcGIS Pro layer becomes invisible

The layer still exists, i can open the attribute table, zoom to the layer etc. And if i change the Symbology manually, it reappears. Anyone knows why and how to fix it?
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58 views

GeoServer layer disappearing from Leaflet map at max zoom?

I am developing an application that uses GeoServer + Leaflet + PostGIS. I created my database-based layers within GeoServer. As a basemap I am using OSM. When the maximum zoom occurs with the active ...
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0answers
11 views

OpenLayers 2 how to load overlay a raster image as they are scrolled into view

I am overlaying a raster map over an OSM base with variable opacity here https://www.aeolian.org.uk/mapexample/slider.html. I want this to work over a larger area, so want to load neighbouring raster ...
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0answers
25 views

Changing data source on all layer files in folder using ArcPy?

I have a folder of .lyr files and I want to change the source on all of them from one file geodatabase to a different file geodatabase. Feature dataset and feature class names will remain the same in ...
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53 views

Updating Symbology on Layer using ArcPy?

I've been trying to update the symbology of a layer on my Python script. The layer that is to be updated shows the percentage of an age range in each region across a county. I have created a test ...
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1answer
64 views

Saving Google Earth Postal Code Layer

In the typical primary database in layers window, under more-> US Govt, there is a Postal Code Boundaries layer. I have been trying to find a way to save this, and ultimately add it to a folder of my ...
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36 views

How can I create a layer for each unique field item in a shapefile using Arcpy

#Introduction and imports import arcpy, string from arcpy import env #User Inputs: layer, field name, output workspace (optional) strTargetLayer = arcpy.GetParameterAsText(0) strFieldName = arcpy....
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50 views

Provide MbTiles from GeoServer with mutliple vector Layers

Is there a way to serve pbfs tiles by loading a mbtiles file (multiple vector layers) into the GeoServer? For this we used before Klokantech TileServer Gl to offer big mbtiles (osm vector tiles) to ...
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0answers
27 views

Updating .aprx file after creating new layer using ArcPy?

I use arcpy function XYTableToPoint_management() to create a new layer vessel_coordinate into the current active map, as shown below. But when I list the layers in this map (map.listLayers()), I hope ...
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84 views

Combining several layers together using Google Earth Engine?

I have executed Google Earth Engine code for filtering areas with linear regression details for a specific time period. The countries were filtered as separate layers. I need to combine those layers ...
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2answers
1k views

Download tile layers for use offline

I would like to download tile layers in this form: {atlas_name}/{z}/{x}/{y}.png Because I want to use them offline with my leaflet map. However, I can't find what are the approaches to download ...
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56 views

QGIS @parent or import to database(Error 7) not working for layer

I have a shape file layer that won't load into the SpatiaLite database and it gives Error 7. It also won't run functions that work in other layers and works fine without the @parent or if I remove ...
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1answer
45 views

Trying to use a SelectByAttribute_mangement after I made the XY Event layer

I imported a CSV file using the MakeXYEventLayer_management and trying to use the SelectlayerByAttribute_management function, but I am getting error message saying on "Object ID(OID)" is present.. Is ...
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0answers
35 views

eCognition multiple layer import

I am currently working with a Geotiff file, which contains 60 different layers. Now I want to create a few classifications, but the attempt to import them into eCognition fails with the error message: ...
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2answers
122 views

Adding GeoJSON tile set to an existing map

I'm confused on how to add my GeoJSON tileset to an existing map built with a default style. Do I add the GeoJSON by ID or by style? Here is what I'm working with now.l Added .geojson to Tilesets as ...
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0answers
652 views

KML file not showing anything on the google map

When i import this KML file: https://yadi.sk/d/G3DJywNAliflew Nothing shows up on the map, just centering around Kazakhstan. This KML file has layer (like 2G cellular coverage map). What i am doing ...
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33 views

Using KML to Layer tool in ArcMap always produces a GDB?

When I use this tool to convert a KML into ArcMap 10.6.1, the menus ask for a GeoDB, then a layer name. At least that is my understanding. I cannot for the life of me import a KML into an existing ...
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0answers
42 views

Symbology or style to separate layers

I have a layer i.e. vegetation, i can split this layer in different colors using rules or categories i.e. light green = grass, darkgreen = trees. Then the colors appear 'nested the layer. When i make ...
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0answers
136 views

Leaflet custom icons and popups showing GeoJSON properties with external data?

How can both custom icons and geojson properties be implemented with external geojson in Leaflet? Using methods described in answers to two other questions, both using inline geoJSON: Using custom ...
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0answers
208 views

.leaflet-control-layers-expanded style control appearance

This might be kind of a nothingburger, but it's nagging enough that I can't fix it and I'd like to know why this is happening!!! I'm also wondering if this little bug might be a sign something isn't ...
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1answer
257 views

How to make layer stacking in envi for landsat 8

I downloaded landsat image 8 and i made layer stacking for RGB layers in ENVI (Bands 4,3,2) to classify the land cover types. but the problem appeared when i conducted supervised classification. I ...
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2answers
45 views

Retrieving Layer Files From Map Packages

I have around 57 map packages that I need to salvage layer data from. The layer files were incorrectly saved with absolute paths instead of relative paths so they won't display unless they are opened ...
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0answers
82 views

Filling Polygon with SVG File so it Will Appear Only One Time in QGIS 3.4.2

I have a layer that shows the world, without Antarctica and small islands. This layer is made of five different polygons. I want to fill it with an SVG file that is displayed non uniform background. ...
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0answers
30 views

Using Datasets in OSM Metadata Within QGIS?

I was looking into ways of using the OSM database within QGIS. I opened the "OSM Standard" and choose the "Biota" category from the ISO categories. However, after I choose this dataset it looks like ...
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1answer
78 views

Run model from script

This is my script where I am trying to use selectby_attribute within a model, based on a field, F*. There are 6 fields, so I want 6 derived layers. Then I am going to use bearing and distance tool ...
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2answers
308 views

How to extract Z data from a shapefile from points on another separate layer QGIS

I have two layers; one with elevation data (m), and the other with roads (derived from points via points to polyines). I want to run a spatial query that basically extracts the elevation data from the ...
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0answers
25 views

Unable to view previously published AGOL Map Image Layer

It's been a while since I've worked with AGOl and map image layers. I'm in the process of republishing several Map Image Layers to a new server. The issue I've been having involves not being able to ...