This icon derives (and returns) a vertical cross section data unit of upper air fields along a specified arbitrary transect line. For each upper air field, point values are interpolated along the transect line, with a spacing consistent with the resolution of the input GRIB data. The cross section data can be plotted (using a default visualisation and with the plot area based on the range of data values) or saved as a NetCDF data file. The following visual definition icons can be applied: MCONT (control of the contouring) and MGRAPH (control de orography). A related icon, Cross Section View, is used to provide cross section plotting specifications. You can use it to visualise a cross-section without explicitly deriving the cross-section data - see Views. The macro language equivalent is mcross_sect(). | 