I have a site where I'm using Maps Javascript API to print several polygons to the screen and manage hover/click events, but I don't need to see the underlying map. At the moment I've just styled all of the map elements to white, and it works, but I'd rather eliminate the requests, since it's currently downloading ~40 seperate blank white squares.
Happy to try a different plugin / API if it works, but I had a look for alternate applications without much luck.
Related
I have a map created in My Maps, and I wand to embed it in a website, however I'd like to have InfoWindows on marker click instead of the default side panel, and change the description a bit.
From what I found, the only way to do so is to use a regular Google Maps API and add my data onto it with a KML layer. This is working, however, the icons (the pins) are highly pixelated and look terrible. When using the same map via embed (or simply opening it) they are OK.
Would really appreciate any help with the issue. Probably there is another way of adding a custom map to an API-powered map?
The answer I've come up with is: no way to achieve what I'm looking for.
When exporting KML layers, Google scales all icons to 32X32 px, and then scales them up (kml file contains scale 1.1 directive). Even if you change the scale, the files remain 32X32, so it does not help; you need to create another files, in other words: the kml exported from Google is not usable if you have custom png icons.
I ended up using regular markers instead of KML layer.
I have a div on my website in which I have created a GoogleMap. I've added markers and implemented MarkerClusterer.
I want to allow the user to click a button and download an image of the currently viewed map as they see it after any zooming or moving including markers:
I tried to use html2canvas and that doesn't work at all.
After searching for how to do this for the last hour, I've come up with absolutely nothing useful.
Is this even possible to capture the div as the user sees it? Or is creating a static google map and saving the image the only way to do this?
SOLUTION
I went with PhantomJS in the end. I created a Map view which takes input through the querystring and uses that data to add markers to a map. I then used PhantomJS to take screenshots from the map view. I then output the screenshot image as a Base64 string.
SnapshotControl is suggested by google in such situations. The limitation is that SnapshotControl supports only URL of upto 2048 characters. So it can be used if there are not much layers drawn on map.
For phantom js, when user clicks on download, the layer data drawn on map should be send to server (through say downloadServlet). This data will be passed to a JSP that can render a map and plot point. Phantomjs will be executed by downloadServlet passing the URL of this jsp.
I have used phantomjs in my application as I draw around 4-5 different layers at a time. Only thing to note here is that the server where phantomjs would be executed needs to have internet connectivity otherwise maps will not be drawn.
Your best solution is Static Google Maps.
See https://developers.google.com/maps/documentation/static-maps/intro for plenty of examples.
Create an image in your div, I would then recommend using concatenation to produce a dynamic url from your marker/LatLng/Polyline etc variables. Then use JS to set the image's src equal to that url.
Following that, there are plenty of JS libraries that will allow the user to download the image.
I have short question.
Is possible render Google maps or Bing maps to hidden element and re-render in canvas with sepia and blur effect?
I think not, so, is possible do this with any kind of todays technologie?
You don't really need to render the maps to a hidden element and then capture it somehow, the maps are all made of images anyway, you just need to download the image tiles. You can then add those images to a canvas in the normal way.
However, downloading and storing GMaps images would probably be a violation of their terms of service, I imagine Bing will have similar restrictions. However OpenStreetMap does allow tile downloading, if you scroll to the bottom of that page you'll see some links to tile providers and tools.
Im trying to highlight specific building within a map using the google maps v3 api. I was wondering if anyone had any idea how to do this. I've been looking through google api documentation and come across nothing at the moment.
For example: http://goo.gl/maps/GyrDB - This is a map of a section manhattan, as you can see the 3d building. Im trying to highlight specific ones on hover.
Thanks :D
If you have information about where the building is, then you can use a Polygon to highlight it. If you don't have information about where the building is, then you are probably out of luck. The Google Maps API doesn't have any way of interacting with the map at that level.
Now, I suppose that one thing you could do is:
download the Google Maps tile,
find the point in the image that the user clicked on,
do a flood fill of that point with some awful colour,
set to clear all the pixels which are not the colour,
overlay that image on top of your map
You would also need to be clever about buildings which lie in more than one tile.
HOWEVER, this might run you afoul of the Terms of Use. I know that they disallow modifying the artwork; I am not sure if this would count as modifying the artwork; you'd need to look carefully at the TOU and maybe ask a lawyer. Or ask Google. (Don't ask me, I am not a lawyer.)
In many countries, every building is a cadastral parcel and there Web Map Service (WMS) layers showing them, provided for free by state bodies.
Using these layers, you can get building polygon coordinates. For ex: https://snag.gy/WtU7ZT.jpg
I want to make a website that displays my map, has panning, zooming and other features.
The google API seems to be the right thing for me. Just one question : Can i use the google javascript api with my own map images on my own server. I dont want to use the actual google maps, just its capability to display zoomable/scrollable maps in a browser
Technically this may be possible using the Overlays section (Ground overlays allow image overlays on the map) of the API and hooking half a dozen events to handle the redrawing at different zoom levels, tiling, hiding the real information about whatever location Google Maps thinks it is showing, etc.
But it is definitely not designed for such purposes and I'm not sure if it would be legal to use it in that way, would have to read the license.
There are other alternatives out there that would be able to achieve this functionality without the level of work needed to get Google Maps to cooperate I believe.
No, I don’t think so.
You may also want to look at OpenStreetMap. I have seen custom map-images being used with its interface.
I think you'll find that the Google maps interactivity code is geared towards working with Google map servers for the underlying map. However, you could put your own layers over their maps and then serve up your own content so long as it used the same mapping co-ordinates.