I'm working on a project in Oracle APEX.
One of the tables has latitude and longitude coordinates to display on the Map Component.
When I run my map page coordinates are displaying on the right places, but there is no map background.
Here is my map page screen.
Changing map background in the attrubutes didn't help.
Making a map with like 5-6 points also didn't help.
Related
I am creating some maps in QGIS 2.18 composer manager. I can easily create grid for my map item, but latitude and longitude lines are going straight through the coordinates labels. Is there some kind of solution, that allows me to create halo effect around text, some kind of buffer? I dont want to move labels.
This is how it looks now:
strikeout label
This is what I want to achieve (created in paint):
desired label
Thanks
I am trying to create a choropleth using d3 for New Jersey state. I have geojson file created as nj.json. You can see it here:
http://mntest.elasticbeanstalk.com/nj.json
When I try to use it to display on web page, it shows a very small New Jersey map, so small it is easy to miss. See it here:
http://mntest.elasticbeanstalk.com/choropleth_test.html
It shows as a small dot a couple of inches below the text.
Can somebody take a look at the source code and guide me how to increase the map size.
Thanks,
D3 newbie
To change the size of the displayed map, set the scale factor of your projection. You might also want to reset the center of the projection to center what you want to show.
This question might be helpful as well.
I would like to create an interactive hexbin plot where clicking on a tile results in printing all points in that tile. How can I retrieve those indices? I know that I can set picker=True when calling hexbin to enable events, create a callback function on_pick(event), then register it with gcf().mpl_connect(on_pick), but I don't know how to interpret the event I receive. Were I using scatter instead of hexbin, event.ind would correspond to my goal, but the contents seem to be different under hexbin.
Thanks!
I'm developing Windows Phone application using Bing maps, background tasks and live tiles. I'd like to show current neighborhood on a live tile (piece of a map). Is it somehow possible to show part of a map on a tile?
I guess instantiating Map object in background task and rendering part of the map as image won't fit into memory requirements.
Maybe there is a web service for returning map image for target coordinates, zoom and image size?
There is indeed a way to do this through the Virtual Earth service. You can read more about it here.
To summarize, you can get a square tile for a specific location just like this:
http://tiles.virtualearth.net/api/GetMap.ashx?c=39.213413,-98.699930&w=800&h=800&b=r,stl.h,device.mobile,mkt.en-US&z=15&logo=no&da=n
I need to implement a feature where images can be geotagged. I want to drag and drop images(one or more images can be selected from the list) onto the map. Then the selected images should be geo tagged automatically to the point where they are dropped.
Can someone give me an idea on how to work on this.
Thanks
Yes, you can do this with HTML and Javascript.
I would advice you to use the jquery libary.
What you do is render the map where you want to place an image(for this example new york city)
What you do is use jquery to make the image you want to drop of yourself at the statue of liberty 50% opacity and draggable.
Under the image you have an in the middle of the image as a "pointer" which is not opaque.
People drag the "dot" under the image to the desired location.
When it's released you take the offset x and y, calculate that to the relative time x and y to find the geolocation and then store everything via ajax.
That's kinda the basis you'll have to work on to accomplish this.
It's a fun project though, but a bit timeconsuming.