Questions tagged [overlay]

A spatial operation in which two or more maps or layers registered to a common coordinate system are superimposed, either digitally or on a transparent material, for the purpose of showing the relationships between features that occupy the same geographic space.

52 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
3
votes
0answers
126 views

Shaded KML overlays on OSM tiles in QGIS?

This seems simple - but the solution is escaping me. I have a series of dynamically generated KML files describing simple, shaded polygons, with each polygon having a slightly different (externally ...
3
votes
0answers
729 views

Raster Over Layer in Leaflet from GeoServer

I want to add a raster over layer onto the base layer and the raster layer is published by a Geoserver WMS. I set the raster layer's geographic coordinate system as the same as the cloudmate tiles. ...
2
votes
2answers
135 views

OpenLayers overlay bubbling problem

Regarding on the previous question asked https://gis.stackexchange.com/a/303372/119333, solution from best answer is implemented and its working. I am rendering tab panel inside popup overlay and you ...
2
votes
0answers
90 views

How to georeference multispectral raster without loss of data

I am trying to align two rasters made of data captured during same flight, but with separate cameras (drone - onboard, and Micasense RedEdge) and two separate gps devices (drone and another one ...
2
votes
0answers
73 views

Overlaying point data with NDVI layer with raster output (not graph)

I have point data, which are animal burrows, and a NDVI raster layer that shows plant productivity. I want to overlay these layers and determine if vegetation productivity is higher close to burrows (...
2
votes
0answers
85 views

Create A Maximum-Gradient Vector Overlay QGIS

I have generated several vector layers of different gradients and geographic areas (PUMAs, ZCTAs & Census Tracts). Is there a way I can overlay all these layers with the aim of identifying the ...
2
votes
0answers
225 views

google earth - viewing KML file in world map

I"m using google earth and a KML file that I have generated. I would like to display all the KML points in a world map. Google maps online does it but the print is poor. Need a 300 dpi print which ...
2
votes
0answers
74 views

How I can create a raster and have the same overlay as another raster in QGIS 2.4?

I have made a graphical model in QGIS 2.4. I have to create a raster equation to rasterize a polygon shapefile. I want to rasterize my shapefile and I want to ensure that this new raster will ...
2
votes
0answers
423 views

GRASS v.overlay.or Error when trying to split a polygon with a line

I am using the Grass plugin in QGIS for Windows (1.8.0). I am trying to split a polygon with a line feature. I am using the v.overlay.or function within the QGIS Grass plugin. I have the line layer ...
2
votes
0answers
815 views

Creating a sidewalk map for a walkability survey

If I wanted to do my own walkability survey of my city, what tools could I use? I have map data from OpenStreetMap, but I have to consider that streets have two sides (which aren't always accessible ...
1
vote
0answers
37 views

QGIS: habitat suitability/combining raster layers

I have created a number of raster layers for different environmental factors (slope, roads, rivers, forest cover) and want to combine them to find areas where the 'ideal' aspects all overlap. For ...
1
vote
0answers
237 views

Setting bounds for image overlay in Leaflet

I'm using LeafletJS map. I need to use an image overlay. I have done it like so: onMapReady(event: any) { this.layers.push(imageOverlay(this.imgSrc + "map.png", [[35.334847, 25.328072], [35.337847,...
1
vote
0answers
79 views

PyQGIS overlaying raster image on vector map correctly?

I have some code written in Python using PyQGIS where I am trying to overlay a raster image gridded with coordinates on to a vector shapefile map with the same coordinates. However, when overlaying ...
1
vote
0answers
30 views

Using Interactive Overlay to Export Geographic Coordinates

I can barely spell JavaScript, but I have envisioned an application working with or embedded in Google Earth that employs the following work flow: This application is intended on working at scales of ...
1
vote
0answers
24 views

GeoServer-Mviewer : point layers over surface layers

I am working on an interactive map designed under Mviewer package and using GeoServer to save symbols and layers. I have a specific issue on it: I managed to generate all layers correctly in my ...
1
vote
0answers
110 views

Bing and Esri satellitary basemaps are misaligned by about 2 meters

Did you ever notice a shift (2 meters) between satellitary basemaps from Bing and Esri? The problem basically arose when GIS technicians have to deal with drawings made in CAD using Bing basemaps as ...
1
vote
0answers
38 views

Extracting point attributes to polygon grid in QGIS

I have point data of endagered flowers found in a number of locations. Each location may have up to hundreds of flower registrations. I want to end up with a 1x1km grid colour graduated from the ...
1
vote
0answers
56 views

Extracting Grids containing 50% polygons (from land use layer) using QGIS?

I have a vector layer of Parcels for a certain area. I need to make grids of 100m * 100m over the parcel layer and then extract those grids which contain 50% or parcels by area. I am currently using ...
1
vote
0answers
61 views

Aligning multiple images with different spatial resolutions

I am using 2 different satellite images that have different spatial resolutions. One of them has 1 degree and other has 0.25 degree resolution. I want to subtract one image from another. So I should ...
1
vote
0answers
47 views

ArcGIS: Get coverage of Polygon A in Polygon B

We have dissemination area (DA) units for a city [Polygon B], and shapefiles of all parks in the city [Polygon A].Polygon A overlaps Polygon B in some areas. We initially wanted to calculate the ...
1
vote
0answers
82 views

Percent of polygon area within multiple ring buffers using ArcGIS Desktop?

I would like to calculate the percent of area of polygons that are within multiple ring buffers of a number of points. The polygons are associated with a specific point so I would like the buffers to ...
1
vote
0answers
100 views

QGIS 2.18 r.patch fails “Input raster map contains cells with NULL-value (no-data)”

In QGIS 2.18.16 with GRASS 7.4.0 (Windows 7, 64 bit), I am trying to create a composite raster layer from two nearly identical versions of a 3-band color geotiff that almost (but not quite perfectly) ...
1
vote
0answers
103 views

Problems with weighted overlay on QGIS for Mac

I am a beginner on GIS seeking to finish a suitability analysis. For this I was planning to use 'vector to raster' tools as well as a 'weighted overlay analysis' to find the most suitable areas. I ...
1
vote
0answers
120 views

How can I display world hillshade and a shapefile without losing original colors and hillshade details?

This is what I am trying to do, but I am using the World Hillshade file from ArcGIS online and a land status shapefile: http://www.esri.com/news/arcwatch/0312/learn-a-new-method-for-displaying-...
1
vote
0answers
95 views

How to align 3D contour file, aerial imagery and design drawings from engineers in microstation v8i series 3.

I am looking to align a 3D contour dgn file with the design drawings from an engineer in microstation. Then align an orthorectified aerial image (Scale 1:10 000) to the contour file and design ...
1
vote
0answers
499 views

How to host kmz file for Google Earth Pro network link

I have a repository consisting of a large number of image overlays, polygons, and 3d polygons in Google Earth Pro. The image overlays are linked to and stored on a windows web server and it works fine ...
1
vote
0answers
102 views

Identifying rasters with specific attribute value that intersect polygon using ArcGIS for Desktop?

I have numerous raster files that each contain an attribute field "VALUE" that can take on the values 0 or 1. How can I identify rasters that have any of their "VALUE=1" cells intersecting a focal ...
1
vote
0answers
81 views

Create junction raster from stream and road rasters

I have converted two vector polyline datasets to raster format. One represents streams, and one represents roads. I need to create a third raster layer that contains cells where there are stream ...
1
vote
0answers
51 views

Combining line vector shapefiles with different attributes

I'm using ArcGIS 10.3 for desktop. I have two shapefiles, both with polyline vector data for roads in the same area. This area is quite large, approximately 7,500 km², so there are a lot of roads in ...
1
vote
0answers
216 views

Georeferenced Image Overlay and export to new image

I have two Geotiffs (one satellite image, one clipped image). I want to put the clipped image over the satellite image, because it shows flow velocity from this shown glacier (see image below). I ...
1
vote
0answers
134 views

Polygon overlay, calculating changes, in QGIS?

I'm trying to create a relationship file between two vintages of census tracts. (in this case, 2010 and 2013.) Reason being to load ACS (American Community Survey) census data and use weighted means ...
1
vote
0answers
410 views

Leaflet.js setBounds, scaling

I'm using leaflet.js to create a map of Scotland, with two insets for the Orkney and Shetland groups of islands. This is as far as I've got. I wish to guarantte that no matter what size the overall ...
1
vote
0answers
70 views

Risk Maps - Spatial Analysis

I have created a basic mining subsidence likelihood map which contains the variables of depth and distance from lineament using the weighted overlay tool. From these results I would like to create a ...
1
vote
0answers
296 views

QGIS multiply(add) two raster but divide(deduct) another raster

I am making a parking analysis in one town. I need to obatin the zones where the parking of car is harder because there is less places to park and higher demand of cars.I have three rasters. First ...
1
vote
0answers
3k views

How to overlay a flat image onto google maps with two points of reference?

The Android API allows for images to be superimposed onto a map. To do so, the developer specifies a set of lat/long coordinates for an "anchor point" within the image, the width (or height) of the ...
1
vote
0answers
434 views

Overlaying Line (Vector) Layer on Raster Zones?

I am using ArcGIS 10 I have a raster layer with 3 values that make up zones. For the purpose of this example, lets say these zones are forest, grass, and open water. My whole raster is made up of ...
1
vote
0answers
484 views

QGis, how to overlay and correctly position and scale a KML and image onto a Google base map

Being totally new to the entire GIS subject I managed to install and get runnning QGis (2.2.0 on Mac) properly, get my Google Maps showing (I set the the CRS to WPSG:3857) and I also got my KML file ...
1
vote
0answers
511 views

Problem with polygon overlay in raster stats using gdal

I am using the raster_stats module in python to calculate the mean carbon value for different sets of polygons. Here is the code that I am using: africa_sat = 'E:/Research_Work/data/processing_data/...
1
vote
0answers
526 views

QGIS plug-in equivalent of ArcGIS's Spatial Analyst Tools -> Overlay/ Weighted Overlay

Specifically I have 12 .bil raster files that show monthly global mean minimum temperature. I file for each month. I want to combine these to create an ANNUAL global mean minimum temperature. In Arc I ...
1
vote
0answers
625 views

How to import AutoCAD .dwg files as overlay on map in Drupal (using OpenLayers)

I am using OpenLayers on my Drupal site. The request is to import AutoCAD .dwg files as an overlay to maps on the site. Is this possible and how? I found the OpenLayers Editor for Drupal, am I on the ...
1
vote
0answers
84 views

How to maintain polygon boundary location during overlay in ArcGIS

I am working with ArcGIS Desktop 10.1 (Advanced license). I am trying to overlay two polygon layers (buildings and landuse) via an Update overlay such that all building polygons are retained and the ...
1
vote
0answers
2k views

Zipcode overlay on OSM

I have to display an overlay with different colors depending on the zipcode in Europe. Can I get this information from OSM shapefile ? If yes, how exaclty ? Is there a tutorial somewhere ? Thanks
0
votes
0answers
21 views

How to select SpatialPoints inside the SpatialPolygons

I have two documents. One is a csv file which contains lon and lat information. Another is a shapefile. I want use "over" command in r to select points inside the polygons, but I get all NA results. ...
0
votes
0answers
19 views

Clip OR Overlay in ArcGIS output feature empty

I use the Clip and Overlay to deal with download data. But they do not work and result in failure. Maybe the data is too large for ArcGIS Desktop to calculate. I do not know where I can check whether ...
0
votes
0answers
35 views

Leaflet image overlays and iOS 12: partial rendering

My PWA (using Leaflet 1.5.1) is currently running (since 2 years) on Android and iOS without problems, until iOS 12 was released. From that point on I have very weird issues on iPhone and iPad. Main ...
0
votes
0answers
69 views

Creating a Leaflet Overlay from JSON

I am trying to make an interactive map using leaflet where the user can toggle an overlay of multi-polygons. So far the following code works using a checkbox to display dummy point data, and radio ...
0
votes
0answers
18 views

Raster Weighted Overlay Terminology

In a Arcmap raster weighted overlay, if an input data set is designated as "restricted" will overlay calculations not be performed on the "restricted" areas, and those areas will be included in the ...
0
votes
0answers
10 views

gdal2tiles.py output tiles changed on new install. geodetic image overlay shifted

given a global coverage image at .04 deg from 60N to 60S and -180 to 180 I previously generated tiles for google overlay using gdal2tiles.py once I determined the right syntax/args to use. The image ...
0
votes
0answers
477 views

Google Earth app KMZ overlay hidden by 3D tees and buildings

I've got a KMZ layer with an overlay layer in the <groundoverlay> tag. I've got 3d buildings and trees in the overlay area, and they hide the overlay. In Google Earth app it is not possible to ...
0
votes
0answers
187 views

geopandas geometry.within problem ValueError: Geometry column cannot contain mutiple geometry types

I'm trying to do an overlap of some lines with polygons with geopandas. For a reason I don't understand, gpd.overlay(grid, hel, how='intersection') is not made for lines and polygons, so I'm trying ...