Is there some example somewhere where we can add a slider in a linestring. Some work around would be hover along the way points or slider outside of the linestring. But I am curious if there is a way for slider embedded in the linestring itself.
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I'am using reactJS and want to design a component with following functionality :
Display pixelated image which is able to zoom in and zoom out at pixel level.
When clicked on image , display a marker- which can be a dot or icon at specific position.
When image is zoomIn/zoomOut, marker size and position should not change.
Even after zoomIn/zoomOut when clicked on image, marker should get repositioned at proper pixel on the image.
I am thinking of applying same logic as used in the maps/ leaflet. Like they maintain separate layers for map and markers on the map. If we zoomIn/out maps it won't affect the marker position or size, same functionality I want for the image.
Anyone with the solution or related library will be welcomed !
(For reference, I want this design for marking GCP(Ground Control Points) on the image, which requires very precise marking at pixel level)
I have openlayers map with a polygon feature.
When we hover over the polygon, it displays the description in overlay.
However the overlay is always displayed on the polygon and not to left and right which is what I am trying to do. In doing so I juggled with css of overlay but couldn't come to the solution. There is leaflet bindPopup() method to display tooltip on objects added to map which I tried to understand but couldn't gain anything there.
My goal is to keep the overlay within the viewport of the map so that it would always be visible.
Just to illustrate what I am expecting here is the fiddle : leaflet popup
Current status : Openlayers overlay positioning
Just set the overlay to appear on the left of the extent of the polygon, such as:
if (feature && feature.get('type') == 'Polygon') {
var ext = feature.getGeometry().getExtent();
let coordinate = [ext[0], (ext[3]-ext[1])/2];
content.innerHTML = feature.get('desc');
popup.setPosition(coordinate);
}
Then you can play with the CSS to display the overlay the way you want.
Is there a way in Geoviews to always display only a small box / portion of the map rather than the whole world zoomed out? It seems to always begin such that the entire world is displayed. I was wondering if there is any option to choose the min/max latitude and min/max longitude?
If you display a WMTS element on its own it will default to a global view. You can however override that by setting the extents on the element, e.g.:
gv.WMTS(some_url, extents=(-70, 20, -50, 30))
The extents are defined a 4-tuple of the (left, bottom, right, top) edges. However if you overlay some actual data on top of a tile source it should automatically set the extents to the range of your data.
I am trying to create a map grid using Google maps. I have a fixed border frame and need to create an overlay on top, similar to this and this example. However, I also need to be able to hover over map tiles using the mouse cursor and change the hue/saturation of the overlay elements accordingly. Each element in the grid will have an onClick() event associated with it.
After some research I found libraries that can be used to draw a grid such as OSMatrix.I also noticed that one of the d3.js examples is somewhat similar to what I am aiming to achieve. The question is, how can I add the visualization as an overlay on top of a map and is it possible to accomplish with API v3 and JavaScript?
I have a script that gets the coordinate of a map by clicking. At the same time, there are circle overlays spread across the map. I can get the coordinate of anywhere but the area covered by the overlays. What is a good work-around for this problem?
Either make the circles with {clickable: false} or capture the click event on the circles also