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Dense vs. sparse data format Description The example 'indexeg' shows how to read data tables with different formats from a spreadsheet:
A spreadsheet may be accessed from Mosel through an ODBC connection (using the odbc driver, indexeg.mos, or with SQL statements, indexeg2.mos), with the software-specific driver excel (indexeg3.mos), or with the portable mmsheet module that can be used to read and write xls, xlsx (indexeg5.mos) and csv (indexeg6.mos) files. Further explanation of this example: Xpress Whitepaper 'Using ODBC and other database interfaces with Mosel', Section Examples - Dense vs. sparse data format.
Source Files By clicking on a file name, a preview is opened at the bottom of this page.
Data Files
indexeg5.mos (!******************************************************* Mosel Example Problems ====================== file indexeg5.mos ````````````````` Using ODBC with dense and sparse format data tables. - Using 'initializations from' with the xls driver - (c) 2012 Fair Isaac Corporation author: S. Heipcke, Dec. 2012, rev. Apr. 2014 *******************************************************!) model "ODBCImpEx3 (generic spreadsheet)" uses "mmsheet" parameters ! CSTR = 'mmsheet.xls:indexeg.xls' CSTR = 'mmsheet.xlsx:indexeg.xlsx' end-parameters declarations A: array(1..3, 1..2) of real B: array(1..2, 1..3) of real C: array(1..2, 1..3) of real D: array(R:range, 1..3) of real end-declarations ! Dense data ('noindex'), skipping the header line ('skiph') initializations from CSTR A as 'skiph;noindex;Range3by2' end-initializations writeln("\n ===A=== ") forall(i in 1..3) writeln("Row(",i,"): ", A(i,1), " ", A(i,2)) ! Dense data initializations from CSTR B as 'skiph;noindex;Range2by3' end-initializations writeln("\n ===B=== ") forall(i in 1..2) writeln("Row(",i,"): ", B(i,1), " ", B(i,2), " ", B(i,3)) ! Indexed data initializations from CSTR C as 'skiph;Range2by3i' end-initializations writeln("\n ===C=== ") forall(i in 1..2) writeln("Row(",i,"): ", C(i,1), " ", C(i,2), " ", C(i,3)) ! Partially indexed ("rectangular format") data initializations from CSTR D as 'skiph;partndx;RectRange' end-initializations writeln("\n ===D=== ") forall(i in R) writeln("Row(",i,"): ", D(i,1), " ", D(i,2), " ", D(i,3)) end-model | |||||||||||||||||||||||||||||
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