I need to be able to show markers (polygons) on a few maps that are JPG's that are various zoom level looks at same thing.
I would normally use google maps for this, but I cannot rely on the mobile device having access to the internet when needed, thus need to use a locally stored set of JPG's and overlay the items on it, preferably with some sort of interaction such as click/touch for more detail popup/modal.
Has anybody made anything similar to this that uses the GEO location but not the internet of a mobile device, and locally stored long/lat details? Can you give me any pointers?
Use CATiledLayer for displaying and overlaying marks.Here is a nice tutorial
Here
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I'm working on a web application to find images taken in a given location. I'd like to be able to do this using the latitude and longitude retrieved from geolocation to match geotagged images in Google images.
Is this possible? I've searched around a bit; it seems it's possible to search Flickr by lat/long, but I haven't found anything that indicates I can search Google images by lat/long. I can search by place name, but I'm looking for something more accurate than that.
Thank you in advance!
After looking through Google's Custom Search API (the Google Image Search API was deprecated and rolled into it), it looks like there isn't a way to search by geolocation.
Flickr might be your best bet since it's more open.
It's possible to retrieve images and photo taken at a certain place (therefore find a place by lat-long data) with Google Earth. While you are on a specific place, you can add additional layers (by default) including photos on your location.
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'm sure this isn't going to be straight forward, however..I have a custom vector map of the UK and it's an animated map. It shows different locations all over the country and I need to be able to allow the user to click on a certain location on the map. So the user will get a pop up about the location they've selected. Something like this - http://jqvmap.com/ However like i said the map has charactertures on it.
I'm wondering how simple it would be to change the co-ordinates in the Javascript to locate the positions on the map. Is there a tool I can get so it tells you your current co-ords on hover to help?
Any suggestions would be much appreciated! It needs to work on all major browsers including IE 8/9 (7 if possible).
Thanks,
Josh
I've found something that seems to have done the trick - http://www.outsharked.com/imagemapster/default.aspx?demos.html#frog
I've implemeted the code onto my page and it's worked. I've managed to get the co-ordinates from the web developer tool bar.
However, I'd like to implement a zoom in feature, where you can zoom and move around the image as if you were using google maps. So you can scroll with the house. My worry is will that lose the co-ordinates on the image? As I still want users to be able to click on the locations on the map.
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.
I've seen some sites, that use Google Maps, have the ability to show 'Points of Interest' on the map. Similar to what Google Earth does.
Here's an example of what I'm talking about: http://i.imgur.com/5OCor.jpg
How can I do this? :/
As far as I know, Google Map does not have a 'Points of Interest' feature for you to enable.
But you always can do it on your own. First of all, you have to obtain a POI database, e.g. Open source POI database? - Stack Overflow
Next, select the POIs visible in the viewport. Then add them to the map using GMarker. You also have to add or remove the POI as user pan and zoom the map.
As you can see this requires fair bit of programming. Google Earth has already packaged this into a great application. But this isn't available in Google map API (that I know of).
One possible source of POI data is http://compass.webservius.com - it's a REST API allowing access to a database of millions of businesses in the USA, searchable by business type (industry code), latitude/longitude bounding box, etc.