Questions tagged [map-overviews]
A map overview is a smaller map, often simplified, shown on a map to provide some form of context, for example to show location in a country when zoomed in on the main map.
36 questions
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MBTiles overview factor '511' is not a power of 2
I am creating an MBTiles archive with the following command
gdal_translate myfile.vrt myfile.mbtiles -of MBTILES -co BLOCKSIZE=256 -co TILE_FORMAT=PNG -co ZLEVEL=6
and then want to add overviews with
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Increased raster file size after clipping and uploading to GCS
I have written a script that access cogs on GCS (google cloud storage), clip it with several vectors I have, and then uploading it back to GCS.
I thought that the clipped image size should be the same/...
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Why are overviews of an out-db postgis raster not out-db?
I'm working on out-db postgis raster and have generated overviews, but why are the overviews generated of an out-db rasters stored in-db?
I have tried creating overviews both manually using ...
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Use QGIS Geometry Generator to expand overview map frame
I have a QGIS (3.16) map layout (maps generated using Atlas) that I have created a map inset, which shows the full extent of the state. Within it, I have an "overview" frame that shows the ...
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How to know if I'm looking at the source data or a downsampled overview/pyramid in QGIS?
If I build overviews/pyramids on a GeoTIFF, when I'm viewing the data in QGIS, is there an easy way to know if I'm looking at the source data or one of the overviews/pyramids? Not sure where the ...
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How the relationship between overviews and zoom level is determined
I am trying to understand the relationship between overviews and zoom levels. For example, using gdaladdo I can create overviews at [2,4,8,16] or at just [16]. From my understanding, this means the ...
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Exaggerate the overview area in the map composer
I work with QGIS 3.28.
As part of an atlas, I have a main map object map 1 and a small map object map 2 (small scale) for location.
The layer used for the atlas iteration is a polygon layer. The ...
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Changing the shape of the overview marker in QGIS print composer
I was wondering if it is possible to change the marker in an overview while working on an atlas in print composer of QGIS.
Could I change the shape of the marker to the actual form of the polygons in ...
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578
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Any way to merge tifs with overviewsm or overvies alone
I have a large dataset of tif images with external overviews. Is there any way to merge these images to one bigtiff including the overviews? Using vrt and gdal_translate doesn't seem to be working. ...
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KMZ file with image overlay - how to show on a website with Google Maps
I have this image that contains map of an area, housing society to be exact, and I have successfully overlay it on Google Earth, my computer on anywhere else offline. Then I saved this place as a .kmz ...
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I have an overview map that is not "square on" in the main map
I am using QGIS version 3.16.6-Hannover.
I have a map with four overviews. Three of the four are square on, but one needs rotation as is obvious by the guide lines in the image.
I have googled my ...
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Setting a label color of zoom extent in QGIS
I set a frame color of zoom extent at print layout-properties-overview when I use atlas.
How can I set a label color of the number this particular zoom extent to be the same as zoom extent frame?
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QGIS overview map of atlas - setting a color
I have an overview map of atlas in atlas print layout. How can i set an automatic change of color for atlas map in overview map?
E.G. I have 600 atlas maps. In oveview map every atlas map is a polygon ...
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Shifting extent of overview map, keeping scale, centering on extent indicator in ArcGIS Pro
In ArcGIS Pro 2.7 I've created a map series with a main map frame (1:5000) and an overview map frame (1:250000) with an extent indicator of the main map frame. Once the map series is enabled the ...
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Creating Spatial Map Series with Overview Map showing changing location of Main Map Frame in ArcGIS Pro
I am trying to create a layout with two map frames. One map frame showing details in M 1:5000 the other one showing an overview map in M 1:50.000. I would like to link both views and show the extent ...
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Adding extent lines to overview maps in QGIS Print Composer
Is there a way of automatically adding lines to overview maps in QGIS 3 Print Composer?
At Creating zoomed in portion of map in print composer it is done manually, but since I have several overview ...
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Creating dynamic inset map for Data Driven Pages using ArcMap
Included below are two screenshots.
The one at the bottom is an example of an old inset map previously created which shows the extent of each data driven page.
The image above that is a ...
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Why am I unable to create overviews in QGIS despite having disk space
I have 120 GeoTIFF files, totalling around 250GB of data.
Files names are from 1.tif to 120.tif.
I tried to create overviews for all the files in one go usinggdaladdo in terminal. While overviews ...
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gdaladdo still very slow on large TIFF
I'm trying to build internal overviews on a big GeoTIFF using gdaladdo and it is way too slow.
From what I could find out it is a known problem (#1442) that has been solved in May last year
However ...
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Overview map for Leaflet
I am looking for an overview map functionality for Leaflet. A participant at a conference was quite convinced that this is part of the Leaflet API - unfortunately I don't remember his name so I cannot ...
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How do I make a map's background transparent in a layout?
I am trying to add an overview map to my layout. The main map is projected while the overview map is a 'globe' (image below). I want to make the white part of the overview map transparent.
I have ...
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GeoServer error adding GeoTIFF coverages with overviews: "Could not list layers from this store"
When I try to add a GeoTIFF as a store on GeoServer, GeoServer fails to add the store, giving the error message java.lang.RuntimeException: Could not list layers for this store, an error occurred ...
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rasterio & cogeo
I am trying to use rasterio to read cloud-optimized geotiff stored in a gc bucket.
With method 1, GDAL makes use of the overviews and read is quick. Unfortunately, if the extent is not fully included ...
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How to add other images as TIFF overviews?
TIFF files can contain overviews for quicker loading/displaying at small scales (=more "zoomed out").
These can be generated and added with GDAL's gdaladdo command. gdaladdo will compute the ...
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OpenLayers OverviewMap not working
I'm using Openlayers 4.6 API and the overviewMap function is not working.
I'm using Bingmap areial as basemap.
this.map = new ol.Map
({
controls: [new ol.control.OverviewMap()], //, attr
...
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Compress GTiff External Overviews with GDAL API
Is it possible to build compressed external overviews with the gdal API? I see examples of using gdaladdo with a COMPRESS_OVERVIEW option passed to the configure flag, but I don't see an equivalent in ...
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Multiple Overview Indicators in QGIS
I am creating an atlas with multiple maps in QGIS. Each map is at a scale of roughly 1:12,000 and also includes an overview map at a scale of 1:200,000 in the corner which shows the entire region of ...
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Overview Panel not displaying layers in QGIS?
I'm learning about the QGIS GUI. I've loaded a sample Alaska raster with the vector lakes layer, and activate the overview panel. However, the layers are not displaying within the panel. The extent ...
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How to include an overview map control code in qgis2web code
Please, forum I would like to know how to add an overview map control code in my qgis2web generated OpenLayers code.If am not clear enough the link below demonstrates what I mean
https://openlayers....
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How make a overview with related scale?
I make map with a overview in QGIS. I try to adjust my overview scale in relation with the first map scale. I explain : I want adjust overview scale with a factor 5 or 50, not fixed scale. When my ...
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Overview map size related to the main map rule
My question is as simple as it's title implies.
I have a map scaled in 1:20.000 and print it in a A0 paper.
Also, I want to add an overview map in it.
I wanted to ask if there is any rule regarding ...
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726
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Map Overview in QGIS not working?
I am trying to create a map overview of a zoomed in area in Zambia. I am doing this step by step from a very nice tutorial, however, in the 'Map Frame' dropdown list there is nothing to select (See ...
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275
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Include map overview details in a legend?
I'm creating a map to show BRUV sites in different marine zones.
There are 6 zones (created an overview for each - please see attached image). The zones are individually displayed in smaller map ...
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Using a fixed map in the OpenLayers 3 Overview Map
Is there a way to 'lock' the overview map in OpenLayers 3 using a fixed extent?
The current implementation resizes the little rectangle and the map. So when I zoom in or out in my map, the map in the ...
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Overview for next/previous page in Atlas
I build a map-book for a hiking trail. On every single page is a part of the trail so you can go step by step from page to page - nothing news. But usually there should be a overview on every page for ...
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Making overview with linked detailed maps in QGIS
I want to create 4-5 detailed maps, and then an overview map that has rectangles that marks the locations of the detailed maps. Best case would be if the rectangles were linked to the detailed map.
I ...
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