jsts | JavaScript Topology Suite | Map library
kandi X-RAY | jsts Summary
kandi X-RAY | jsts Summary
JSTS is an ECMAScript library of spatial predicates and functions for processing geometry conforming to the Simple Features Specification for SQL published by the Open Geospatial Consortium. JSTS is also a port of the well established Java library JTS. The primary goal of the project is to provide web mapping applications with a complete library for processing and analyzing simple geometries but JSTS can also be used as a free standing geometry library. JSTS was made using automatic translation of the original JTS Java source via AST to AST transformation preserving the JTS API, except for the I/O related classes which has been selectively and manually ported with support for WKT, GeoJSON and OpenLayers 3+. A Google group is available for discussions. A port of JTS Validation Suite provides additional tests.
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Top functions reviewed by kandi - BETA
- Calculate RDFW
- Creates a new bundle .
- Prints help text
- Encode a geometry string to a Geometry object .
- Encode a geometry .
- Encodes a geometry as string .
- Encode a geometry .
- Main entry point
- Returns a polygon geometry string .
- Encode multi - geometry into multi - geometry .
jsts Key Features
jsts Examples and Code Snippets
function det (m00, m01, m10, m11)
{
return (m00 * m11) - (m01 * m10);
}
Community Discussions
Trending Discussions on jsts
QUESTION
I am trying to alert user while drawing polygon over Google Maps with pre rendered Polygons using geoJson. Whenever polygon is drawn over existing Polygons, user should get alert. I got an example but it works for the polygons on the same layer (Fiddle Example). My Code is hosted here. Refer the image below that I need:
JS Code as below:
...ANSWER
Answered 2021-Mar-13 at 16:23One option would be to parse the polygons from the GeoJSON to "normal" google.maps.Polygon
objects, then preload those to your all_overlays
array:
QUESTION
I have the following JS code to create a 1 mile buffer in Openlayers using JSTS. However, I'd like to add 2 or 3 buffers but change the colour from the default for easier viewing.
So far, I've tried this as this styling as changed the fill/stroke of my points before
...ANSWER
Answered 2021-Mar-05 at 22:09As @Mike indicated in his comment: "The image option in ol.style.Style is used to style point features with an icon or regular shapes such as a circle. Your buffered geometry is a polygon, and is styled by stroke and fill options of ol.style.Style"
Change the style
:
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