Openlayers get scale from scaleline

Author: tylm

August undefined, 2024

WebOpenLayers. Bounds. Construct a new bounds object. Create a cloned instance of this bounds. Test a two bounds for equivalence. {String} String representation of bounds object. Create a new polygon geometry based on this bounds. {Float} The height of the bounds (top minus bottom). { OpenLayers.Size } The size of the box. Web20 de ago. de 2015 · it shows 1000000 KM in scale line; added scale lin control as follows. var scaleLineControl = new ol.control.ScaleLine(); map.addControl(scaleLineControl); When I keep projection as default it gives proper scale line. How to achive correct scale line for other projections? When I am trying to get the extent of map I am getting array like

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

WebExample of printing a map to a specified scale. The print is exported as a PDF using the jsPDF library. Unlike the Export PDF example the on screen map is only used to set the center and rotation. The extent printed depends on the scale and page size. To print the scale bar and attributions the example uses the dom-to-image-more library. phosphoric acid respirator cartridge

css中link与@import的区别 - CSDN文库

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 … WebProjection and Scale. projection 12 scale 4. View projection. Example of maintaining scale when changing projection. getPointResolution () is used to calculate the resolution for the … 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 … how does adh reach the kidney

ScaleLine control does not respect metersPerUnit of the

Print to scale example

WebDescription. target. Element string undefined. Specify a target if you want the control to be rendered outside of the map's viewport. className. string string [] undefined. Custom class name of the control container element. Default is ol-mapscale. scaleLineClassName. Web26 de mar. de 2015 · How can I change the format of the scaleline in OpenLayers? I have a black background and I want to change the lines in the scalebar to white. I use: phosphoric acid reacts with sodium hydroxideWebOpenLayers. 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. how does adh affect urine concentration

"Web14 de mar. de 2024 · 在CSS中，`link`和`import`都可以用于引入外部CSS文件，但它们之间有一些区别。 `link`是HTML中的一个标签，它用于在HTML文档中引入CSS文件。 " - Openlayers get scale from scaleline

Openlayers get scale from scaleline

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

Web Scale line example 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.

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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 …

Webscale {Float} Factor by which to scale the geometry. A scale of 2 doubles the size of the geometry in each dimension (lines, for example, will be twice as long, and polygons will have four times the area). origin {OpenLayers.Geometry.Point} Point of origin for resizing: ratio {Float} Optional x:y ratio for resizing. Default ratio is 1. 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

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 http://terrestris.github.io/momo3-ws/en/openlayers/ol3/src/controls/scaleline.html

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 () ]),

Web13 de jan. de 2024 · 1 Answer Sorted by: 1 Maybe openLayers css for scaling is not imported, or overwritten. try importing this style into your header and see if it worked. … how does adh travel to the kidneyWeb19 de dez. de 2024 · Code that creates the ScaleLine: var scaleLine = new ol.control.ScaleLine ( { target: document.getElementById ('map-scale-bar'), units: "metric", minWidth: 100 }); map.addControl (scaleLine); The target div … phosphoric acid reaction with rustWeb29 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 = … phosphoric acid propylene oxideWebmap = new OpenLayers.Map ('map', { scales: scales, units: 'm' // or whatever }); Then add your layer. Note that layer-based resolution options will 'control' the map; you should typically only specify these things on the map or the layers, not both. phosphoric acid solubility in acetoneWeb30 de jan. de 2024 · In addition, I have tried with a projectected system as 3857 and in this case I see that the scaleline is ok for the default viewport but If I change the scale or … how does adh work in the bodyWeb27 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 … how does adhd affect adult lifeWebOpenLayers 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 … phosphoric acid residue