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calculate_r_expression [2018/09/03 14:29] francisco [R Script Outputs] |
calculate_r_expression [2018/09/18 14:14] (current) francisco [R Script Outputs] |
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| * Collections of numbers are valid number vector's. | * Collections of numbers are valid number vector's. | ||
| - | * A [[Lookup Table Type|Lookup Table]] requires //2// number vectors, one for the "Keys" and another for the "Values". Both vectors must have the same number of elements. | + | * A [[Lookup Table Type|Lookup Table]] requires //2// number vectors, one for the "Key" and another for the "Value". Both vectors must have the same number of elements. |
| - | * The ''outputTable'' function requires a table, that can be construct with [[http://www.r-tutor.com/r-introduction/data-frame | data.frame]] R function. Tt has an optional parameter too, to put how many Key columns the table has, from the leftmost column, the default value of it is 1. | + | * The ''outputTable'' function requires a table, that can be constructed with [[http://www.r-tutor.com/r-introduction/data-frame | data.frame]] R function. There is another parameter that is optional with default value 1, and it means how many Key columns the table has, from the leftmost column. |
| <note important>Notice the use of the stringAsFactors = FALSE flag. This flag prevents R from converting the passed strings to Factors(numbers).</note> | <note important>Notice the use of the stringAsFactors = FALSE flag. This flag prevents R from converting the passed strings to Factors(numbers).</note> | ||
| Line 108: | Line 108: | ||
| === Lookup Tables === | === Lookup Tables === | ||
| - | Lookup Tables are transferred to R as a List with two columns, "Keys" and "Values". | + | Lookup Tables are transferred to R as a List with two columns, "Key" and "Value". |
| Each column can be individually accessed by using the ''$'' operator, for example: | Each column can be individually accessed by using the ''$'' operator, for example: | ||
| - | * ''t1$Keys[ 1 ]'' will access the first key of the Lookup Table ''t1''. | + | * ''t1$Key[ 1 ]'' will access the first key of the Lookup Table ''t1''. |
| - | * ''t2$Values[ 2 ]'' will access the second value of the Lookup Table ''t2'' | + | * ''t2$Value[ 2 ]'' will access the second value of the Lookup Table ''t2'' |
| === Tables === | === Tables === | ||
| Line 128: | Line 128: | ||
| Expression: | Expression: | ||
| <code rsplus> | <code rsplus> | ||
| - | for ( i in 1:length( t1$Values ) ) { | + | for ( i in 1:length( t1$Value ) ) { |
| - | tempValue <- t1$Values[ i ]; | + | tempValue <- t1$Value[ i ]; |
| - | t1$Values[ i ] = tempValue * tempValue; | + | t1$Value[ i ] = tempValue * tempValue; |
| } | } | ||
| - | outputLookupTable( "poweredTable", t1$Keys, t1$Values ); | + | outputLookupTable( "poweredTable", t1$Key, t1$Value ); |
| </code> | </code> | ||
| Line 142: | Line 142: | ||
| Expression: | Expression: | ||
| <code rsplus> | <code rsplus> | ||
| - | tableMean <- mean( t1$Values ); | + | tableMean <- mean( t1$Value ); |
| print( paste( "Mean is", tableMean ) ); | print( paste( "Mean is", tableMean ) ); | ||
| outputDouble( "mean", tableMean ); | outputDouble( "mean", tableMean ); | ||
| </code> | </code> | ||
| - | Noticed the ''print()'' statement? Dinamica EGO's Message Log will show output messages from the R script (as Result's). | + | Noticed the ''print()'' statement? Dinamica EGO's Message Log will show output messages from the R script (as Result's).<note warning>If the Message Log level is Unconditional, the messages will not be printed.</note> |
| ==== Plot passed Lookup Table to an image on the path specified by passed String ==== | ==== Plot passed Lookup Table to an image on the path specified by passed String ==== | ||