Export results to GeoTiff for GIS

tyl

Dear all,

I wonder is there a way to export results from md to GeoTiff or any other raster format to further analysis and display in GIS?

Thank you

Allen

in-woo

Hi Allen

I used the QGIS application for making raster/geotif data.

QGIS is an open source software. MMQGIS plugin at QGIS may help you import (md.mesh.x, md.mesh.y, data) csv format file. Then, you can interpolate the scattered data into raster file, using 'raster->interpolation' option.

http://www.qgistutorials.com/en/docs/interpolating_point_data.html

This link may help you understand how to use interpolation option and QGIS.

But this process is very inconvenient for directly use in matlab .

Or you can use the 'InterpFromMeshToGrid' function in ISSM lib/bin.

I haven't yet used this function for interpolating the scattered data. Maybe, other users explain how to use this function well...

Best, In-Woo

nicoleschlegel

Hi Allen,

In the past, I have interpolated my ISSM mesh onto a uniform grid, and then written it to a tiff.

Once you have your data and your mesh points on a regular grid, you can use:

R = maprasterref('RasterSize', size(yourdata), 'YLimWorld', double(), 'XLimWorld', double());

and then you can use matlab's geotiffwrite to write your data to a tiff file.

Hope this helps,

Nicole

tyl

Thank In-Woo and Nicole Schlege for suggestion, finally I use export x and y coordinate with wanted value then interpolate manually in GIS.