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Reading 3-dimensional arrays Description This example shows how to read a 3-dimensional array from an excel file (threedimarr.mos) and from a generic spreadsheet (threedimarr5.mos) where the last index is specifed 'across the columns', resulting in a pivot-style table format where the first N-1 columns contain index values (here: 2 index columns). Model versions (2) and (4) show the same example for databases, and model version (6) works with data in CSV format. Note that standard use of the 'partndx' option for spreadsheets assumes that the last index is a set of type 'range', the example partidxstr.mos defines a utility routine 'makelabel' that makes it possible to work with a 'set of string' for the last index.
Source Files By clicking on a file name, a preview is opened at the bottom of this page.
Data Files
threedimarr4.mos (!******************************************************* Mosel Example Problems ====================== file threedimarr4.mos ````````````````````` Reading 3-dimensional arrays. - Using OCI statements - (c) 2014 Fair Isaac Corporation author: S. Heipcke, Jan. 2014, rev. Aug. 2023 *******************************************************!) model "ThreeDimArr (OCI)" uses "mmoci", "mmsystem" parameters DB="myname/mypassword@dbname" ! Login to Oracle database (not provided) CNCT="mmoci.oci:debug;"+DB end-parameters declarations I: range J: set of string K = 1..5 ! The last index set must be defined in the model A: dynamic array(I,J,K) of real Idx3: text end-declarations setparam("OCIdebug",true) OCIlogon(DB) if not getparam("OCIsuccess"): setioerr("Database connection failed") setparam("OCIndxcol", false) ! Partially indexed data forall(k in K) Idx3+= (", Index3_"+k ) OCIexecute("select Index1, Index2" + Idx3 + " from Tab_23", A) OCIlogoff writeln("A: ") forall(i in I, j in J, k in K | exists(A(i,j,k))) writeln("A(", i, ",", j, ",", k, "): ", A(i,j,k)) end-model
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