How to merge the data sets

[poonam]

Hi All,


I have elevation data in .asc format of each tile and i import the grid into global mapper and then generate contour of that tile.
After that export the contour as a nasa world wind tile. now i want to merge the no of tiles data into one data set , how can i create a one data set using the global mapper or any other way to do that task..

Thanks in advance.

[global_mapper]

Rather than exporting directly to NASA World Wind I would instead export your contours to some other format, like a Global Mapper Package file. Then when you have all of your contour files created, just load all of those back in at once and export your World Wind tiles.

Let me know if I can be of further assistance.

Thanks,

Mike
Global Mapper Support
support@globalmapper.com

[poonam]

Thanks, Can i do it for whole world data?

[global_mapper]

Sure, there is no limit on the coverage area of data in Global Mapper. Of course if you try to create a data set of contours of the entire world at high detail you might run out of memory, but you can get around this by creating a map catalog (File->Create New Map Catalog) from your data and working with that.

Let me know if I can be of further assistance.

Thanks,

Mike
Global Mapper Support
support@globalmapper.com

[poonam]

Hi,
I create contour for India tiles but when i displaying as a raster image on globe it showing on the south Africa.These tiles are not showing at the exact location.

What is the reason behind that?
Please help me.

[global_mapper]

Typically this means that the data was not loaded with the correct projection when you loaded the data. Are you being prompted to select a projection when you load the data file?

Thanks,

Mike
Global Mapper Support
support@globalmapper.com

[poonam]

yes i am selecting projection file and when i export as .shp file then it taking the correct location but when in export as a world wind tile then it displaying in the South Africa.

Where i an doing wrong?

[global_mapper]

Is the data showing at the incorrect location in WorldWind or Global Mapper? Is the data at the correct lat/lon prior to exporting from Global Mapper?

Thanks,

Mike
Global Mapp

[poonam]

Hi,

Yes it showing incorrect location on the world wind.
suppose i want to create contour only for India then how i have to give naming conventions of the tiles.There is some setting when we create contour in gridding option.what are these?

By default from where global mapper start naming of tiles.Because when i export contour as worldwind tile then it gives the naming convention like Name\0\0001\0001_0002.jpg and this tile displaying in the south Africa rather then in india.
How to i have to do display these tiles at exact location in world wind.

[global_mapper]

The tiles should be named to place them the correct location automatically. Is the contour data correctly placed in Global Mapper prior to export to WorldWind? I would guess that the contour data is not at the correct lat/lon in Global Mapper prior to export to the WorldWind tiles, so the output is not correctly placed. What does the display show for the lat/lon of your contour data in Global Mapper prior to export?

Thanks,

Mike
Global Mapper Support
support@globalmapper.com