Re: NGDC binary format files

Have you tried to blindly use that grid as is in GMT5 and just have faith?

Joaquim

> Hello,
>
> I am looking to make GMT grids of the FSU magnetics data but I am not 
> sure how to read it into GMT.
> The header file is shown below for the binary file, and looks to be 
> scanline
>
> Cheers
> Lester
> file_title                       = 1 Arc Minute Grid, Region 1
> data_type                        = image
> palette                          = RAINBOW
> data_byte_order                  = little_endian
> map_projection                   = lat/lon
> missing_flag                     = 99999.99999
> upper_map_y                      = 77.65
> lower_map_y                      = 35.4
> left_map_x                       = 18
> right_map_x                      = 60.98
> number_of_rows                   = 2536
> number_of_columns                = 2580
> grid_size_y                      = 0.017
> grid_size_x                      = 0.017
> grid_unit                        = degrees
> grid_origin                      = lowerleft_x
> grid_cell_registration           = center of cell
> data_value_unit                  = millioersteds
> mag_anomaly_min                  = -8849.65760
> mag_anomaly_max                  = 40586.58700
> mag_anomaly_units                = millioersteds
> http://www.ngdc.noaa.gov/geomag/fliers/se-0102.shtml
>   
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