Questions tagged [scale]
The ratio between distances on a map and distances in the world
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Georeferencing two georeferenced TIFF files BUT scale of output file is too big
I have two GeoTIFF referenced files of a tree orchard and when imported into QGIS they are slightly misaligned from each other and I want to ensure alignment the corresponding tree with each raster so ...
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ArcMap maps don't print at exactly 1:24000 scale
I'm printing out USGS topo maps, that when printed should be in at a 1:24,000 scale. However, when measuring the physically printed maps, the 1 mile scale bar does not match my physical 1:24,000 ruler ...
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Problem exporting contour lines between QGIS and Rhino (or AutoCAD)
I am a French student studying architecture in Mexico. Currently, I am trying to retrieve contour lines in QGIS from a raster (.tiff) to export them to Rhino 7.
Processes:
I import my raster file (it ...
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Get rotation and scale of picture after georeferencing using QGIS
How can I access the rotation and scaling information, that is visible during the georeferencing process in QGIS (see yellow marked text in the picture), after the georeferencing is completed and the ...
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Is there any way to link the current map scale in the print layout to a text box?
Is there any way to link the current map scale in the print layout?
I know you can do something similar with the the date by entering $CURRENT_DATE(yyyy-MM-dd) into the text box.
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Address Points dissapear when zooming in on ArcMap. Problem occurred after ArcMap crashed during a editing session
I was editing addresses when ArcMap completely crashed. I reopened it and almost had a heart attack. All the addresses for the whole municipality were gone. I zoomed out and they reappeared. I am ...
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Arcpy : setting DataFrame scale to export map over specific domain
I am trying to automate the export of a map to png over a given domain (SW and NE coordinates) in ArcPy (ArcMap version 10.7.1). I've searched a bit but fail at setting the correct automatized scale (...
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Layout Manager - Map Size
I try to create two really simple maps with the QGIS Layout Manager. I can adjust the size of the map with scale and the extends - but why is there that blank white space around, and why the blank ...
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Tiled basemap not showing at certain scale in QGIS layout
I'm using a certain tiled base map and am encountering difficulties with scaling in the layout-manager within QGIS.
For instance the QGIS project shows the basemap at scale 1:750, but the layout ...
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Keep a polygon in the same dimensions at different scales
I am mapping NPDES point sources for the Fairfax County. I drew polygons around each point source at a large scale and I can clearly see them. When I zoom out at a small scale, the polygon looks like ...
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PyQGIS changing the scale
I am building a script where I need to set my scale of my added vector layer. I get no errors with my script as written but the scale does not change. FYI - I run this script through the plugin ...
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Scaling linestrings gives incorrected final scale
I have a shapefile with about 5000 line strings. I am translating and scaling this file using GeoPandas:
import geopandas
green = geopandas.read_file('./shapefiles/unnamed (1)_green.shp')
The ...
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Setting an explicit scale when translating GeoTIFF to PNG
When converting to PNG I'd like to convert the height of the GeoTIFF (which is a float) to UINT16, but also setting the maximum range to 5500, by clamping any values smaller or larger to min or max ...
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Is it necessary to apply a scale factor before band combination?
I am using Landsat 8 C2L2 and I would like to compose Bands 1-6. If I don't apply the scale factor at all, what would be the problem? Also, when I am trying to find, for instance, NDVI value after I ...
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QGIS Scale print of ground surface profile
I am trying to print a scale version of a ground profile generated using either Profile or QProf.
Neither of these tools seems to allow me to print to scale so that I can measure with a ruler both ...
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Scale and data precision
In the metadata of a database containing locations of natural hazards, it appears that the accuracy of the georeferencing of each point is associated with a scale of 1:10,000.
How can I associate this ...
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Set a fixed size for symbology in ArcGIS Pro
I'm looking for a way to set a fixed width for line symbols in ArcGIS Pro so that they remain the same actual on-ground size no matter what scale the map is currently at, instead of automatically ...
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Loading DXF data with original dimensions into QGIS
I have many DXF files. And these are architectural drawings.
In QGIS, I want to place buildings in their real locations on earth, and I am preparing a plugin for this.
But when I export the DXF data ...
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Drawing circle of known radius to scale on ArcMap
How do you draw a circle with a known radius (ex: 1 meter) to scale in ArcMap 10.8?
I have used the draw tool, but a circle with a radius of 1 meter drawn with the draw tool is not to scale.
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Mapnik image render not corresponding to generated tiles
I successfully manage to install a tile server using Mapnik following this tutorial: https://switch2osm.org/serving-tiles/manually-building-a-tile-server-ubuntu-22-04-lts/
The tiles are fine and look ...
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Natural Earth Data and OSM do not overlap
I downloaded data from natural earth data. The data are all the admin areas in the world 1:10m. I overlay this data with OpenStreetMap, and there are parts where the natural earth data really is off. ...
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Printing map as several sheets of paper
I have a circular map (radius = 840m) and I need to print on A0 paper sheets. For references I am adding my qgis map and AutoCad model showing how it should be splitted into 20 A0 sheets.
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MCARI index standard range and formula
What is MCARI's standard range of high and low value. Like NDVI range is from -1 to +1, so is it from -1 to +1 or different because when I am calculating it my range goes up to in thousands. Also if ...
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Printing a map to 1in=40ft scale on 24in x 36in paper, but need it to fit to the entire paper
I need to print a map to 1:480 scale but have the map fill in a 24in x 36in paper. I'm trying to print a map of a parcel with a building lot and contours, however too much of the surrounding area is ...
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Scaling an Image in QGIS to a specific distance
I am trying to scale a JPEG image based on the grid present in the image.
I know each tick in the image shows 10km, and I want to display circles of 4.5km in diameter over this image. I can't figure ...
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QGIS : How to make pie charts that depict quantity on certain coordinates/site?
Does anyone know how to create a map such as this one in QGIS? In short, if we have a table with list of sites with coordinates and and one column with numbers dedicated to μg /g according to which ...
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Choropleth of world countries showing microstates
I'm trying to create a choropleth of world countries that also shows microstates - but the issue I have is that they're too small to be seen at the scale.
Wikimedia projects sometimes use this ...
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Change Kriging Output Scales using ArcGIS Pro
[![enter image description here][1]][1]
I have made a series of Kriging maps based on different time periods, but I want them all to have the same scale.
For example, all should be 33-69.5. Is this ...
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Scale mismatch on different platforms
I just started using QGIS. I need to work with QGIS on three different operating systems (Windows 11 (QGIS 3.26), MacOs 12 (QGIS 3.26) and Ubuntu 22.04 (QGIS 3.22)/Fedora 36-Linux(QGis 3.26).
I ...
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Google Earth Engine scaling behavior of discrete vs continuous image data
I have a simple question related to how GEE determines continuous vs discrete data, specifically during scaling operations as described here.
I am unable to find a proper description of this, but my ...
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Point Symbol ranking like Google Maps based on zoom level and scale in ArcGIS Pro
I have a challenge to create a style for point layer which show some point of interest in a zoom level then show the other on the next zoom level, considering these
no overlap between symbol points (...
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Some labels disappear when exported from QGIS to DXF
I'm using QGIS 3.14.
I have two layers with labels in QGIS, set up to map units. In "rendering" section of label properties I have set up to show all labels for these layers.
I want to ...
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Synchronize QGIS layout map scale with canvas scale
Is there any option to make the map scale match the canvas scale automatically? That is without having to use the "Set map scale to match main canvas scale" button.
Actually I expected it to ...
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How to change scale unit with ol.control.CanvasScaleLine(), in Openlayers
I have a scale control var scaleLineControl = new ol.control.ScaleLine({}); and I can change the scale unit.
However, I would like to know if it is possible to change the unit with com var ...
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How to determine pyramiding policy?
Under scale, Google Earth Engine (GEE) mentions that:
For continuous valued images, the pixel values of upper levels of the
pyramid are the mean of pixels at the next lower level. For discrete
valued ...
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Scale reference changes significantly when reprojected from GCS to PCS
I am using QGIS throughout this whole process.
I have a varied selection of open-sourced African spatial data (i.e. municipalities throughout Africa) that I have been trying to reproject from their ...
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How to mask raster based on vector shape file
For this work Data are obtained from:-
For Raster:-https://download.hermes.com.np/land-cover-map-of-nepal-2010/.
For Vector :-https://cellapp.co/download-nepals-new-map-vector-image/.
Rupandehi ...
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Memory limit exceeded when using sampleRegions and exporting
I have an image with a band called "classification". This band ranks between 0-1000 the probability of plantation expansion happening across Brazil. I am trying to create a function that ...
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How do I generate a grid where each cell is equal to 500 px at 1:250k scale?
I worked this out once but I forgot how I did it. Somehow the grid size created a whole number of cells.
I have a map with the following extents:
xmin = -20037508.3427892439067364
xmax = 20037508....
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ArcGIS Pro - Cannot zoom in beyond 1:1 in Layout (can't get to 1:0.5) but can in Map View
CS: California State Plane Zone II
I have a point feature class with 3 points in it. These points are separated by about an inch (x y and z). In map view, I can zoom in beyond 1:1 (1:0.2 for example, ...
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Calculating map scale in WGS84
I use the mapViewer from the example of https://docs.geotools.org/latest/userguide/tutorial/map/style.html
I would like to present the current scale (it's works ok in projected CRS), when I set WGS 84 ...
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Drag Scale on Leaflet?
Is it possible to drag the scale on a Leaflet map ?
L.control.scale({'position':'bottomleft', 'metric':true,'imperial':false}).addTo(map);
I used this possibility for a wind rose with this code
north....
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Retrieve scale-value of a specific map in specific print-layout for using this scale in model-builder
I made a model with the model-builder which create a grid with its height- and width-size dependend on the size of a certain map in a certain print-layout. It allready works fine.
But that for I need ...
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LiDAR derived streams - map scale
Historically, streams were defined by the map scale. For example, for a map with a scale of 1:24,000 would mean that the streams identified on that map would be 1:24,000 streams.
With streams that are ...
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How to set the scale bar correctly in print layout
In the print layout, the layer uses custom projection, and the correct scale cannot be set.
I want to use kilometers as the scale bar, but this custom layer can only use map units as the scale bar, ...
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Making roads and labels appear or disappear based on scale using QGIS [duplicate]
On most maps, labels disappear the further one zooms out. For instance, on a local scale one can see labels for local roads and small towns, but on a national scale one can only see highways and major ...
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Leaflet: CRS.Simple Transformation for real life measurement
I am trying to set-up a CRS.Simple Coordinate Reference System with a custom transformation.
I got a real world construction plan with
scale of 1:500
width 11112px
height 10432px
density 288
I tiled ...
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Freezing the scale of XYZ layers
I am trying to use an xyz layer to align with some additional layers that will be overlaid. My problem is that the imagery at a resolution closer than 1:2900 is almost a decade old, so I don't want ...
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QGIS - what the equivelant rendering scale dependencies for the zoom levels when generating XYZ Tiles (Mbtiles)?
I am trying to make a map from zoom 0 until zoom 12 in QGIS. All shapefiles have CRS: EPSG 900913.
What i am trying to acheive is eg: on zoom 0 will show just the map, then zoom 2 till 8 will appear ...
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Making space between line features on different scales using ArcGIS Pro
I have a feature class layer where linear features will often be digitised close to each other. These lines are all features in the same layer.
Example when zoomed in:
Problem when zooming out to ...
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