Z-MAP Plus I/O Access Library - Landmark Software Manager ...

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Z-MAP Plus I/O Access Library Landmark Graphics Naming Output Data Files Any file which is created in a ZPI/O run (usually referred to as an output file in the ZPI/O documentation) should be a variable argument. If a routine creates a new member file and you specify a name that already exists, a version number is added to this filename. This new filename (with the added version number) is returned to you in the same argument you sent. It is very important to set the name of the file equal to a parameter, send that parameter as part of the calling argument. For example, S4CDTR argument NAMODA for the name of the output data file should be coded as: CHARACTER *24 NAMODA NAMODA = ”OUTPUT FILE” CALL S4CDTR(... If the name exists, it is returned in the argument as: NAMODA = ”OUTPUT FILE V-01” ISTAT is set to –1 and a warning message is sent: ****** WARNING - DUPLICATE FILES, A VERSION NUMBER HAS BEEN ADDED This notifies you that you have the correct filename, if you use the name in another routine after S4CDTR. Input/Output Arguments in the Subroutine Descriptions For files of this type, the documentation shows the code φ up on the left side of the page to indicate that it is both an input and an output argument. 33 ZPI/O Overview: Comments and Suggestions 5000.0.0
Landmark Graphics Z-MAP Plus I/O Access Library Reading and Writing Grids Grids are stored in a columns so that an NROW by NCOL size grid occupies NROW*NCOL words in a member file. The grid element (IROW,ICOL) is the (ICOL – 1)*NROW + IROW word on the grid member file. For example, the grid cell denoted by the XX in the diagram below is cell (10,10). It is the (10 – 1)*12 + 10 = 118th word sequentially on the member grid file. YMAX 1 2 3 4 5 6 7 8 9 Columns 1 2 3 4 5 6 7 8 9 101112 10 11 XX 12 YMIN YMIN Rows XMIN XMIN For additional information, see ”Reading and Writing Grids” on page 247. 5000.0.0 ZPI/O Overview: Comments and Suggestions 34 XMAX XMAX YMAX
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