Questions tagged [scale]
The ratio between distances on a map and distances in the world
358
questions
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14 views
Is there a way to get the scale of a map using gdalinfo? [on hold]
I'm completely new to GIS and using GDAL, and I was wondering if there was any way to extract the scale of a map, using information such as the Geo Transform, Corner Coordinates, WGS84 Extent, or ...
0
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1answer
26 views
Keep the same image scale after mosaicking
I am trying to keep the same original image scale after creating a mosaic with the same images. But when I try to add in a map this image I can´t configure the visualized parameters.
The problem is ...
0
votes
1answer
12 views
How to Converting stream definition threshold to extract drainage network to metric scale?
I extracted two drainage networks from a DEM of 30 meters resolution with two stream definition thresholds: 1000 pixels and 500 pixels.
Can you tell me what this thresholds represent in terms of ...
1
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1answer
43 views
Locating date, scale, and coordinate system of shapefile in ArcMap?
I am trying to locate the date, scale, and coordinate system/projection of a shapefile in ArcMap but when I right click on the file in the table of contents and go to properties, I don't see the date ...
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1answer
28 views
Increase max zoom for large scale raster with GeoServer
I'm serving a large scale raster (warehouse map) with GeoServer.
I consume the WMS in a Leaflet web client and coordinates are projected according to EPSG:3857.
But it seems that maximum zoom is ...
0
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0answers
48 views
Scaling WGS84 coordinates?
I know this is a weird question, but I would like to know if it is possible to construct a proj4 string so that I can use proj4 to convert from WGS84 to a "scaled" WGS84 system. For example with a ...
1
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1answer
51 views
Scale of shape in a Print Layout
I am making an atlas with a fixed scale, and want to include circles with a fixed radius (in scaled kilometers) about the center point in the atlas (see image below). I was able to do this by ...
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0answers
13 views
Creating Scale field based on polyline length (ArcMap)(Python)
I'm playing around with data driven pages, and have a polyline feature class that I'm using as my index. Now, because the lines are all of variable lengths I can't just use the default settings as ...
2
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1answer
91 views
What is WMTS' ScaleDenominator?
I am trying to write a program which will render tiles from EPSG2180-based WMTS server. Given coordinates of a point (WSG84 or EPSG2180, I can convert from one to another) I want to render a tile ...
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0answers
19 views
zoomScale() doesn't work in QGIS 2.14 standalone c++ application
Can't set scale for my canvas with mapCanvas.zoomScale(50000); Seems like canvas is zooming to 1:1 and for a few seconds I can't zoom in or zoom out with mouse wheel. Any suggestions?
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1answer
39 views
Adjust label/symbol size in print composer automatically when choosing different scale for atlas
I am having trouble with my labels/symbols in the print composer and didn't find a solution here so far.
I have a project with a certain area from which I have to create several layouts in the print ...
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0answers
68 views
Understanding projection, extent and scale in QGIS?
I am creating a map using QGIS that has shapefiles in different projections. I was able to reproject them to the correct ESPG code that I need, however they do not line up. My base layer "illinois ...
1
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1answer
42 views
QGIS3 How to export shapefile symbology to scale?
I'm looking how to export in QGIS3 a vector layer with a determined scale.
It was straightforward in QGIS2 when I was exporting to a shapefile I had the option symbology scale but it disapear in QGIS3 ...
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0answers
34 views
Interpreting meter values of extent using ArcGIS Pro?
I am using ArcGIS Pro application to create a map and add a single polygon feature class onto the map.
As shown below, I use bold polyline to outline the boundary of the polygon and click "zoom to ...
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0answers
25 views
Raster Resolution - Will not display past certain scale
I just created a mosaic of a couple hundred digital elevation models in ArcGIS desktop. The mosaic only appears at the raster resolution. I am working with a very large area and need the scale of my ...
2
votes
1answer
258 views
QGIS 3.2 - How can I scale polygon about his center? [duplicate]
How can I scale a polygon about his center? I find only transform function, but the scale function here can only move the polygon with the scale factor and don't enlarge it.
2
votes
1answer
115 views
Scale bar for Iceland map not accurate
I'm a fairly new user to QGIS and was trying to generate a map of Iceland. However my grid scales are not matching up. The base map I'm using is Esri National Geographic which uses CRS- EPSG:3857 - ...
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0answers
38 views
Trying to figure out ArcGIS API's `mapScale` variable and how it maps to OpenStreetMap's zoom level
I'm using ArcGIS' /export endpoint to get an .svg of a few map layers given a specific bounding box. However, when I apply the .svg as an image overlay to OpenStreetMap's world map using Leaflet, the ...
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0answers
180 views
Print Openlayers WMS map with fixed scaling
I need to print a map with a fixed scale (1:500 and 1:1000) on A4. The online map is done with Openlayers, the print request is sent to QGIS Server using WMS getPrint function.
I mange to get an ...
0
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1answer
90 views
QGIS Print composer using margin and scale
When using the Atlas feature in the print composer is there any way of using both the Margin around feature and a defined scale?
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0answers
37 views
AGOL: Overwrite existing tile service - Invalid min scale in the specified source item
I'm trying to automate updating a tile service where:
TPK is generated from a feature class in an .mxd (data frame is web mercator)
TPK is pushed up to AGOL
Tile Service is published
TPK is deleted ...
0
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0answers
156 views
QGIS 3.4 layout: fix extent and scale, let size adjust automatically
I'd like to create maps with a defined extent and scale. Logically, the map size has to adjust accordingly.
Since I will be using the maps as pdfs (and not on paper), this won't bother me.
Is this ...
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0answers
20 views
Creating more than one map page and breaking geometry representation based on max map scale in QGIS Atlas?
I am using atlas tool of QGIS. Map scales were defined for better fit in each geometry based on predefined values.
I would like to know if there is a way to create a new map page and 'break' the ...
0
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1answer
96 views
Earth Engine export scale interpretation
I'm exporting a Landsat RGB image from Earth Engine. I want to use the full native resolution (30-m pixels) in the output file. However, it seems that using 30 in the scale argument fails to export at ...
3
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0answers
65 views
Changing legend spacing to be further away from map border in QGIS?
I am using QGIS 3.2.3
I am creating a map in which I have added a legend to (see figure below).
My issue is that I am trying to create a legend which has spacing between the two columns. I have ...
0
votes
1answer
174 views
Scale issues with Google Roads XYZ tiles in QGIS layout
I am trying to include Google Roads as XYZ Tiles in QGIS in a map that I want to export as PDF as a Layout.
Google roads features and the text looks ok on QGIS and in the Layout, however, after I ...
1
vote
0answers
54 views
Which is the View.getResolution() units? [duplicate]
In OpenLayers v5, if I have a view defined like this:
var view = new View({
center: [952014.59, 5571269.68],
zoom: 8
});
, trying to get its resolution doing view.getResolution() outputs 611....
1
vote
1answer
38 views
Appropriate resolution for regression analysis
I'm using ArcMap 10.3. I'm a student working on a research problem where I'm taking Landsat imagery (at 30-meters resolution) and regressing it against other datasets captured at different scales (up ...
2
votes
0answers
256 views
How to get extent from current resolution in OpenLayers 3 for printing
I need to print a map with a fixed scale of 1:500 horizontally on a A4 paper (297x210mm). The map is done with Openlayers, the print request is sent to QGIS server using WMS getPrint function.
Till ...
3
votes
1answer
57 views
Can you make QGIS decorations scale dependent?
I have a QGIS project that includes a grid decoration. Is it possible to display this decoration only when zoomed in? I.e. can decorations in QGIS have scale dependent visibility?
2
votes
2answers
229 views
How to scale features declining using map units in QGIS
I have layer in QGIS that I want to style using SVG symbols.
I want the SVGs to increase in size when zooming in the map. I can solve this by using map units instead of millimeters.
Though, I don't ...
2
votes
0answers
60 views
WMS - understanding <Min> and <MaxScaleDenominator>
I am working on a personal web gis client and the first thing I am implementing is support for OGC WMS 1.3.0.
Right now, I am in the middle of greying out layers in my layer tree which are not ...
2
votes
0answers
42 views
Assessing impact of spatial scale on derivative calculations and associated kernel size?
Full question: What is the most appropriate way to assess the impact of spatial scale on derivative calculations associated with typical 3x3 moving window kernel operations?
This relates to a couple ...
0
votes
1answer
28 views
Custom Projection and Alignment of Large-Scale RGB Time Series Mosaics
We are running an experiment to observe time to germination and growth in potato plants in a greenhouse. To that end we have built a gantry system equipped with an RGB camera to capture the plants ...
1
vote
1answer
144 views
GeoServer - Conversion formula between scale and resolution
I am trying to figure out what is the conversion formula between scale and resolution used by GeoServer, specifically when creating a new gridset for Tile Caching. One would expect that the conversion ...
1
vote
1answer
317 views
Setting fixed scale of map in MapInfo layout?
How do I set the scale of a map in MapInfo v16 64bit in a simple way?
I can zoom in and out using my mouse but I cannot find how to set the scale to say 1:1000 or 1:2000.
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0answers
99 views
Scale raster cell in stack from -1 to 1 with R [closed]
I have a raster stack with 364 layers with a daily rate of change in NDVI values.
I want to scale these values in every cell if positive from 0 to 1 and if negative from -1 to 0. So far I have only ...
-1
votes
2answers
42 views
How to maintain current zoom level when panning to a new feature? [duplicate]
I want to speed up my work. How could I get ArcMap to stay at my current zoom level when panning to a new feature?
What I am currently doing is using Ctrl+Enter to move through my attribute table and ...
1
vote
1answer
493 views
Disappearing map image when georeferencing in ArcGIS 10.6 desktop
I am trying to add an un-georeferenced map into ArcMap as raster so that I can manually georeference it, then use it as a base to draw polygon features on top of it.
I can add in the image and ...
0
votes
1answer
228 views
Generate grid for specific scale in QGIS
I have a rather large map that I want to break down into smaller parts, or sheets. So I'm going to use the 'atlas' feature of QGIS Print Layouts. My layers in QGIS have a CRS of GDA94 (degrees), where ...
1
vote
1answer
148 views
Why does gdalinfo -hist give values outside of [0 - 65535]?
I am running gdalinfo -hist on a 3 band tif file and am getting the following output (see below). Notice it says 256 buckets from -78 to 40184. That's fine, but then when it shows the histogram, ...
1
vote
1answer
63 views
MapProxy WMS Print Scale Problem
The application that I work with consumes WMS services created in Geoserver via MapProxy. I used ysld to style my layers. As long as I want just display my layers in the application, the scales that I ...
1
vote
1answer
87 views
Scaling layer symbols from ArcMap to QGIS
I am recreating the symbology of a cartography moving from ArcMAP to QGIS substituting some font symbols in arcmap and reproducing them with new .svg symbols. The problem is that setting the size of ...
1
vote
1answer
195 views
Set zoom level to display full extent of specific layer when starting a project in QGIS
I have project in QGIS 3.2 with different shapefiles and WMS layer. When I start the projectfile (.qgs) I want the extent of the map to be the same as one specific WMS layer (same as the option "zoom ...
0
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0answers
96 views
OpenLayers 2: zoomToExtent with scale
I need to zoom map to show some selected features from layer. So I am creating a temporary layer with features and zoom to this temporary layer.
The problem - usually the scale is too small, so I ...
1
vote
0answers
161 views
How to get DPI to find current scale in OpenLayers?
Is there a way to automatically retrieve the DPI value of an OpenLayers page? The goal is to automatically retrieve the map scale from this code:
function mapScale (dpi) {
var unit = map....
-1
votes
1answer
122 views
Fixing OpenStreetMap scale in MapInfo?
I have OpenStreetMap (OSM) in MapInfo and I would like to export a County but when I zoom out to view the county the map scale changes.
Does anyone know how to set the scale of OSM so I can export it ...
0
votes
0answers
99 views
Can GDAL give the scale of a raster?
I have a GeoTIFF and I am trying to overlay a scale (miles or km) using GDAL.
Is there a function in GDAL that will do this?
I believe ArcPy has this functionality, but I am guessing GDAL does ...
1
vote
0answers
62 views
ol3 zoom with defined scale
I am trying to show map based on the gridset defined in geoserver, in such a manner that map zooms to that Scale only.
Scale is as follow : 1:1000, 1:500, 1:400, 1:300
view = new ol.View({
...
1
vote
0answers
53 views
Understanding scaling or projection with vector shapefiles which leads to 1:500,000,000,000? [closed]
I am conducting a habitat suitability analysis using ArcGIS desktop 10.2.2.
I have a vector .shp of a number of georeferenced hare sightings across Ireland, however when I load the layer on to my map,...
