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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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8 views

GeoServer on AWS EC2 [on hold]

How to install GeoServer on to AWS EC2 instance for Windows? What are the steps to install a GeoServer on AWS? Actually I am attempting to create a web map in OpenLayers by pulling in layers from ...
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0answers
12 views

QGIS 3.4 Modeler: Select a band of a raster layer for processing

As model input data I select a raster stack with three bands. The first processing tool just needs specific bands of this stack which I like to select in the input dialog. I create a 'Raster Layer' ...
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1answer
18 views

Seeking quarternary watershed map of Eastern Ontario?

I am looking for a quarternary watershed map of Eastern Ontario. Where is the best place to look for this? I am currently using the ArcGIS Online basemap software to create my maps. I have a CSV ...
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0answers
10 views

How to generate a layer of points from a database of lat, long using qGIS? [duplicate]

I am a programmer but I am new in QGIS. I have a database of some hundreds of points with lat, long information. It is an excel spreadsheet. How can I create a layer of points of each lat, long from ...
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3answers
1k views

Create Layer from Selected Features tool: How is the list of features stored?

In ArcGIS Desktop, there is a tool called Create Layer from Selected Features. Using this tool, I can convert a selection to a layer in ArcMap. It's my guess that there is a "list of features" that ...
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2answers
2k views

Data Source of layer changing after copy/paste in Table of Contents of ArcMap?

I run into this situation all the time; I often just copy layers and groups of layers in the TOC of one Map Document and paste then into the TOC of another Map Document. For the most part this ...
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1answer
32 views

OpenLayers, problem with WFS service and “outputFormat”

I have a service and I tried to paint his layer on my map: http://www.ign.es/wfs-inspire/unidades-administrativas?REQUEST=GetFeature&SERVICE=WFS&VERSION=2.0.0&COUNT=1&srsName=EPSG:...
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1answer
42 views

ArcMap MXD drops layers

I have a user who is using ArcMap 10.5.1 and several times his MXD has lost layers. This has occurred in two separate documents. He will work on a map, save the map, and close out. When he opens it ...
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3answers
111 views

Intersect multiple layers at once QGIS

I'm very new to QGIS and am just learning the intersect function. I have about 10 polygons that overlap (not perfectly) and one layer of about say 15 points. I want to know with which of the polygons ...
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0answers
17 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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2answers
397 views

How to update projection of layers in Geoserver using gsconfig

Im using following code to find projection of layer from geoserver.catalog import Catalog cat=Catalog("http:// localhost:8080/geoserver/rest") myResource = cat.get_resources(store='storeName', ...
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1answer
48 views

Selecting features from multiple layers for export QGIS 3.6

I have multiple features I want to select over multiple layers and then export these selected features to a new layer. The 'Multiple Layer Selection' plugin is not supported by the QGIS 3.6 so that ...
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1answer
1k views

Is it possible to set different scale dependent visibility for one layer classifications?

I'm working on a sewer and water network, so I need to set different scale visibility for primary, secondary and tertiary network.
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2answers
168 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 ...
3
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1answer
397 views

Receiving data from php script for geoJSON TileLayer?

I want to get geo data as geojson for geojson tile layer requests in leaflet. I set up a geojson layer like this: https://github.com/glenrobertson/leaflet-tilelayer-geojson/ A php script answers ...
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0answers
25 views

Layer adding/removing using PyQGIS? [closed]

I'm working on a plugin which fetch data from Vector Layers and I'm trying to update the informations whenever a fitting layer is added or removed. At first, I tried with QgsProject.layersAdded and ...
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1answer
34 views

Define coordinate system for layers with data from mdb-file (Microsoft Access Database) in ArcMap

The point data set from table points in the Microsoft Access Database (mdb) file data.mdb is visualized as layer points.lyr in ArcMap 10.6. The coordinate system is known. However, it is not allocated ...
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1answer
62 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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1answer
19 views

Changing ArcMap Display Order of Elements in Same Layer File?

I have a bunch of polygons in a layer file and I want to reorder those polygons so one of them is "sent to back". I am using ArcMap 10.5.
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0answers
38 views

Why did QGIS 3.6 crash? [closed]

I have clipped a raster file using a shapefile as a mask. And I tried to export the new layer and modified the projection from WGS 84 EPSG:4326 to EPSG: 102022 Africa Albers Equal Area Conic. When ...
2
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0answers
44 views

Standalone error using Python 3: layer.isValid is False [duplicate]

I am trying to create a standalone application using Python 3.7 and QGIS3.6. on Windows 10. I have installed QGIS using the OSGEO4W method, in the 64-bit flavour. My issue is that when I try to load ...
3
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1answer
39 views

Using expressions to relate column to layer style in QGIS?

I have a QGIS project with N layers, each pointing to the same CSV file with columns "1_1, 2_1, ..., N_1". I would like each layer to refer to its respective column (Layer 1 -> column 1_1, and so on) ...
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1answer
51 views

Display legend of WMS in layers panel in full extent

When loading a WMS layer from e.g. http://www.wms.nrw.de/geobasis/wms_nw_dgk5 the legend of the layer with larger desciptions is displayed in the layer panel not to its full extent (see picture). When ...
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1answer
15 views

Have GraphicsLayer working but now need to put it in or convert to FeatureLayer (JavaScript)

I have a GraphicsLayer working for "Regions" and the corresponding popup template information for the staff within each region (below). function fillRegionMarkers() { // Create ...
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2answers
108 views

Automate filling of attribute table using QGIS?

I am new to QGIS and wish to automate my current process. In my project I have to open the attribute table of the batch_16 layer having 5 fields (date, checked_by, td_created, td_catagor and ...
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1answer
310 views

Unchecking “Scale symbols when reference layer set” by default in ArcMap?

In Layer Properties > Display, the "Scale symbols when a reference layer is set" is checked by default, and 90% of the time I don't want/need the symbols scaled. Is there any way to change the ...
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0answers
23 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 ...
0
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1answer
41 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 ...
1
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1answer
49 views

Getting TypeError: <type 'str'> from arcpy.mapping.ListLayers()?

I want to use ArcPy to turn on the labels for a layer. I use this code but it fails and returns an error. import arcpy mxd = arcpy.mapping.MapDocument(r"C:\Users\P51\Desktop\testingLABEL.mxd") ...
2
votes
1answer
37 views

Getting layer label from ArcMap Table Of Contents?

How do I get a layer´s label from the TOC? I can´t find a similar question and ArcGIS Help tells nothing about it. I have searched even in other knowledge bases but with no success. I need to get ...
0
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1answer
208 views

Determining number of layers in .mpk file and then enumerating it using ArcGIS Runtime SDK for WPF? [closed]

I need to determine number of layers in a given .mpk file and then enumerate it using ArcGis Runtime SDK for WPF 10.2. Can anyone provide me some link or code/snippet?
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0answers
42 views

Why did not I manage to reproject layer?

I have a global land cover map, which has the following properties: Name ESACCI-LC-L4-LCCS-Map-300m-P5Y-2010-v1.6.1 Path C:\QGIS\ESACCI-LC-L4-LCCS-Map-300m-P5Y-2010-v1.6.1.tif\ESACCI-LC-L4-LCCS-...
2
votes
1answer
234 views

CartoDB displaying layers and infowindow? [closed]

I just started testing and using CartoDB, and I am dealing with this problem on a map that has been published already: http://deix.is/ueberwachungsstatistik/ I have made minor corrections to the ...
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2answers
536 views

Getting feature coordinates from dynamically loaded layer using OpenLayers?

i want to load the coordinates of a point that is stored inside a vector layer and the vector layer is stored inside a layergroup. I do load the vector layers dynamically to the layergroup "Runs". So ...
8
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1answer
1k views

Force geometry type in mixed geometry WFS layer in QGIS?

I have an external WFS source serving mixed geometry types - in other words, I have no control of the source. When adding the layer QGIS sets the geometry type to line and thus I am unable to style ...
2
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0answers
37 views

Slow retrieval of features

I have a vector layer with lots of features and I'd like to create a new layer in Python, containing only a subset of those features. To be more specific, I downloaded OpenStreetMaps data of Austria (...
9
votes
3answers
20k views

Getting extent of layer in QGIS?

Is there a way to get the extent (bbox) of a vector layer in QGIS? I see that I can update the extent, but I am looking for the actually coordinates of the extent.
2
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2answers
816 views

Could not create destination layer

I am using QGIS 3.0.3 to make a heatmap using processing toolbox, kernel density estimation. The input I am using: I have generated centroids from polygons using Vector --> geometry --> centroids ...
3
votes
2answers
198 views

Is there a way to apply the “Select features by rectangle\polygon…” function on multiple layers simultaneously?

I have put a map together using openstreemap data that is intended to be used as a base for different projects. However due to the amount of information (number of layers) the loading time is rather ...
2
votes
1answer
272 views

QGIS Print composer: Point symbols not correctly displayed in legend

My problem: I have a point layer with a symbol size of 15958 meters. On the map they are all correctly displayed. When designing the map in the print composer and adding a legend, the symbols in the ...
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vote
1answer
195 views

Build Radio Button in QGIS Edit Widget Properties

My question is similar to Choosing multiple options from QGIS Check Box or Value Map for feature attribute? I have 3 categories in a row, i want to make this selection in form of radio button so that ...
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1answer
73 views

CartoDB - Non-animated heatmap, but won't let me layer under

I have a simple heatmap layer that is not animated. I want to move a choropleth layer above that heatmap layer, but Carto will not let me, as it thinks my Heatmap layer is animated. Is there any way ...
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0answers
31 views

QGIS Multi distance buffer units do not align with the main layer

I have a buildings shapefile of Beijing. I know the projection WGS_1984_UTM_Zone_50N WKID: 32650 Authority: EPSG So I would like to create multi distance buffer from a central point but when I do so, ...
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2answers
27 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 ...
2
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1answer
37 views

Merging infomation from multiple layers in QGIS?

I am currently looking at a city map with property boundaries. I have three layers of information, one is a polygon map showing the boundaries, one is a polygon map showing overlay information, and ...
2
votes
1answer
241 views

Using more than one group for single layer in GeoServer?

I have a huge number of layers in my geoserver that I have painstakingly imported and they all work correctly when viewed with GeoExplorer etc. I want to know if there is any way to create set maps ...
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1answer
27 views

How can I extract the coordinates from one layer and import them in a diferent layer when key field is the same?

I'm working with 2 different layers. First one is a csv file with 3 fields. Name, longitude and latitude. Second is a text file with the field name. I want to assign the longitude and latitude ...
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0answers
36 views

QGIS 3.45 Layers Panel point data labels set too far apart

The Layers Panel in v 2.18 is fine but we are now trying to go live with 3.45 and are experiencing issues with the display of some layers in the panel. Layers that are generated from an MSSQL spatial ...
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1answer
127 views

Adding raster layer to map in ArcGIS Pro project using ArcPy not working?

I have a raster dataset in a geodatabase and I would like to add it to my map using arcpy. I have tried with the following lines of code but it doesn't work (no error thrown): raster_data = r'D:\...
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0answers
24 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 ...