Questions tagged [dpi]

Dots per inch (DPI, or dpi)[1] is a measure of spatial printing or video dot density,

Filter by
Sorted by
Tagged with
1
vote
1answer
28 views

Specific WMS request for printing

I wish to use a special wms request for printing only. full request looks like: /geoserver/test_osm/wms?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image%2Fpng&TRANSPARENT=true&...
0
votes
0answers
118 views

What it means when choosing a “dpi” when exporting a PDF map in ArcGIS?

I'm trying to understand something when exporting map as PDF file in Esri's ArcGIS for Desktop. The ability to choose paper size. The ability to choose DPI. Thought that those are printer parameters....
2
votes
0answers
175 views

QGIS print layout (large size printed image)

I have been asked to create large size images to be the printed with a good quality to look at. The images could be with dimensions of 1 meter in height or width, but even larger. I must create these ...
1
vote
1answer
289 views

How to change layout DPI in QGIS 3?

I am trying to change the DPI of QGIS3 (3.6) in the layout manager. However, as the Figure below shows (lower left corner), the DPI (300 by default) seems to be read only. I tried to click the ...
1
vote
0answers
100 views

Changing default DPI for Export Map to Image in QGIS?

In QGIS 3, is there a way, perhaps a configuration file, to change the default DPI for doing Export Map to Image from the Project \Import/Export menu? I use this function a lot, but the default DPI, ...
3
votes
0answers
164 views

Could not allocate required memory for image

I'm trying to export a 24k image (export set to 1650DPI) using the "export as image" function but I keep getting the "Could not allocate required memory for image" warning. I don't understand why ...
1
vote
1answer
91 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 ...
2
votes
0answers
288 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....
0
votes
0answers
227 views

How zoom base on scale in ol?

I want to zoom to ol3 map base on scale(for example 1:50000). This means every 1cm in ol map must show 50000cm in real world. for converting scale to resolution I used as follows: var ...
1
vote
1answer
121 views

How to calculate the ratio between DPI and MB in QGIS?

I need to make maps that do not exceed a limit of 20 MB. Up until now I worked with DPI values, that I choose when I export maps from the print composer Maps with the same DPI have a different MB ...