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NeXtMidas User's Guide
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Type 1000Type 1000 files contain a one-dimensional array of data values. Typically they relate to the same physical quantity; examples are continuously-digitized data, a power spectrum, or a correlation function. The header for Type 1000 files contains physical abscissa (i.e., x-axis) information:
This lets primitives compute the physical abscissa value corresponding to any data element in the file. Referring to data elements by its abscissa location is called abscissa addressing, in contrast to index addressing which designates data elements by their index in the file. Type 1999Type 1999 files are a special form of type 1000 files. Plottable type 1999 files (like map1 or map2) have the form: # Real Imag - ---- ---- 1 # block pts -999 2 min_blk_lon min_blk_lat 3 max_blk_lon max_blk_lat 4 # pts color # 5 min_lon min_lat 6 max_lon max_lat 7 lon1 lat1 ... n lonN latN The -999 as the first entry in the IMAG column is used to tie blocks of points together. A simpler form of 1999 file is: # Real Imag - ---- ---- 1 #pts color # 2 min_lon lat_min 3 max_lon max_lat 4 lon1 lat1 5 lon2 lat2 ... n lonN latN |
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