site stats

Openlayers get scale from scaleline

WebEdit Projection and Scale projection 12 scale 4 View projection Example of maintaining scale when changing projection. getPointResolution () is used to calculate the resolution for the new projection which corresponds to that for the old projection. main.js WebOpenLayers Scale Line Control integrated in the canvas (for jpeg/png new CanvasScaleLine ( [options]) Parameters: See: http://www.kreidefossilien.de/webgis/dokumentation/beispiele/export-map-to-png-with-scale Extends ol.control.ScaleLine Methods setMap (map) Remove the control from its current …

openstreetmap - OpenLayers Scale Line not showing on the map ...

Web24 de jul. de 2024 · The OpenLayers example is scaling to fit a displayed map extent into a paper size. If you want a specific scale on paper the logic will be slightly different. You need to set map size from the paper dimensions and dpi. For A4 portrait at 300dpi the paper pixels therefore the mapsize will be [ 210 * 300 / 25.4, 297 * 300 / 25.4 ] WebExample of using OpenLayers and d3 together. Data Tiles (data-tiles.html) Generating tile data from scratch. Device Orientation (device-orientation.html) Listen to DeviceOrientation events. Drag-and-Drop (drag-and-drop.html) Example of using the drag-and-drop interaction. Drag-and-Drop Image Vector (drag-and-drop-image-vector.html) rocking chair cushion set with skirt https://kolstockholm.com

4.2. Displaying a Scale Bar — OpenLayers Workshop - Read the Docs

I also try another method with scaleLineI have a map object: _map=new Map (..) _map.addControl (new Openlayers.Control.ScaleLine ()) but it shows 5000000km, is it a way to show it like 1:5M on the map. Please any helps! thx openlayers Share Follow edited Jul 12, 2024 at 21:06 asked Jul 11, 2024 at 22:09 lin 167 1 3 13 Add a comment 1 Answer WebOpenLayers. Control. ScaleLine The ScaleLine displays a small line indicator representing the current map scale on the map. By default it is drawn in the lower left corner of the map. Inherits from OpenLayers.Control Is a very close copy of OpenLayers.Control.Scale Summary Properties maxWidth {Integer} Maximum width of the scale line in pixels. Web22 de mar. de 2024 · Scale line Setup First you need to install Angular-cli npm install -g @angular/cli Then generate your Angular application (no strict typechecking, no routing, CSS) ng new openlayers-angular cd openlayers-angular Install Openlayers npm install - … other term for cell membrane

OpenLayers.Control.ScaleLine - OpenLayers - Wolgast

Category:Openlayers in an Angular application - Basics - DEV Community

Tags:Openlayers get scale from scaleline

Openlayers get scale from scaleline

OpenLayers v4.6.4 API - Class: ScaleLine

Webprint 1 printing 1 scale 4 scaleline 2 export 3 pdf 2 grid 8 Page size Resolution Scale Export PDF Example of printing a map to a specified scale. The print is exported as a … WebA control displaying rough y-axis distances, calculated for the center of the viewport. For conformal projections (e.g. EPSG:3857, the default view projection in OpenLayers), the …

Openlayers get scale from scaleline

Did you know?

WebOpenLayers 3 API Reference - Class: ScaleLine ol.control.ScaleLine Methods render changed get getKeys getMap getProperties getRevision getUnits on once set setMap setProperties setTarget setUnits un unByKey unset Fires change:units propertychange ga ga.Map ga.layer ga.style.StylesFromLiterals gax ol ol.Attribution ol.Collection … Web22 de nov. de 2024 · You could use html2canvas to create a canvas copy of the map including controls or overlays as in openlayers.org/en/latest/examples/print-to-scale.html but instead of adding the canvas to a pdf export it as png via canvas.msToBlob () or canvas.toDataURL () as in your code – Mike Nov 22, 2024 at 19:30

WebOpenLayers 3 provides an ol.control.ScaleLine for just this. Creating a ScaleLine Control Tasks Open the map.html in your text editor. Somewhere in the map config, add the following code to create a new scale line control for your map: controls: ol.control.defaults ().extend ( [ new ol.control.ScaleLine () ]),

Web17 de ago. de 2024 · Openlayers ScaleLine component has a way to convert from resolution to scale, but what about the other way around? Our customers are choosing a scale for each layer, indicating the scale where the layer should be visible. That’s why I have to convert from scale to resolution. How to show or hide layers in OpenLayers? WebOpenLayers v7.3.0 API - Module: ol/control/ScaleLine ol /control /ScaleLine Typedefs Options Units ol /array ol /AssertionError ol /Collection ol /Collection .CollectionEvent ol /color ol /colorlike ol /control /Attribution ol /control /Control ol /control /defaults ol /control /FullScreen ol /control /MousePosition ol /control /OverviewMap

Web27 de jan. de 2024 · Open Layers 2 had a rather useful OpenLayers.Control.Scale()control, that would display the current "scale" relative to the projection bounds / zoom level. Such a control would also be useful in OL3. Likewise, a control that showed the current zoom level would also be useful.

Web31 de mai. de 2024 · The units are within the projection of the view. From a map object, you can get it using: See also the API documentation of the ol.proj.Projection#getUnits … rocking chair cushions flagWebOpenLayers.Control.Scale; Summary. OpenLayers. Control. ScaleLine: The ScaleLine displays a small line indicator representing the current map scale on the map. Properties: ... ScaleLine: Create a new scale line control. Functions: draw {DOMElement} getBarLen: Given a number, round it down to the nearest 1,2,5 times a power of 10. other term for cell divisionWeb29 de out. de 2024 · getResolutionFromScaleWithProj = function(scale, proj){ var units = ol.proj.get(proj).getUnits(); var mpu = ol.proj.Units.METERS_PER_UNIT[units]; var dpi = … other term for challenged