Now finding GoogleVis is a major discovery for me but I encoutered two problems with this tool:
1- Since my data is in other coordinate systems, I need to transform it into WGS84 so that it is overlayable on the Google maps. My data are the point data (referring to the house positions) so it is really awkward to see a point on Google map refereing to a house location to be shown on road or empty land!. I had the same problem overlaying my data on the Google Earth/Maps and it seems that it is the end of the road for me on that issue unless I find a way to do the corrections in the coordinates! .. have to brush up my GIS knowledge.
2- The even bigger problem is the problem of limitation on the number of points or entities your can do overlay on. It is only 400 points to be more exact. So if you have more than that, the function will truncate the data set and will show a prompt on the top left of your map screen about that. I think this is a limitation from the Google server.
If I can solve my first problem, then I will try to find a way to solve the second problem too. But the first problem is more dire.
I am looking to find a platform so that I can have my map shown then the results of analysis are shown on the map (most likely in the form of points) and then here comes the "inter-active" parts so that the user can click on the points and get the information. Further I think I will need to find a way to give the user the freedom to change the attributes and see the results of that online.....
1- Since my data is in other coordinate systems, I need to transform it into WGS84 so that it is overlayable on the Google maps. My data are the point data (referring to the house positions) so it is really awkward to see a point on Google map refereing to a house location to be shown on road or empty land!. I had the same problem overlaying my data on the Google Earth/Maps and it seems that it is the end of the road for me on that issue unless I find a way to do the corrections in the coordinates! .. have to brush up my GIS knowledge.
2- The even bigger problem is the problem of limitation on the number of points or entities your can do overlay on. It is only 400 points to be more exact. So if you have more than that, the function will truncate the data set and will show a prompt on the top left of your map screen about that. I think this is a limitation from the Google server.
If I can solve my first problem, then I will try to find a way to solve the second problem too. But the first problem is more dire.
I am looking to find a platform so that I can have my map shown then the results of analysis are shown on the map (most likely in the form of points) and then here comes the "inter-active" parts so that the user can click on the points and get the information. Further I think I will need to find a way to give the user the freedom to change the attributes and see the results of that online.....
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