Extracting Matrix Elements using Defined Variable in Workspace

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Nima Forghani
Nima Forghani 2012-6-8
Hello,
I'm trying to figure out if there is a way to identify a matrix element by passing through a variable string name inside the matrix call out as shown below:
System_Type= 2 <--- Variable Defined in Workspace
OutputMatrix = [8x8] <--- Matrix Defined in Workspace
OutputMatrix(1,1) <--- Normally Defining the value of the element in matrix
OutputMatrix('System_Type', 1) <--- How I would like to pass through variable "System_Type" and be able to extract the element of the matrix based on the string input value.
I'd appreciate it if anyone can provide guidance on this! Thanks Nima

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Walter Roberson
Walter Roberson 2012-6-8
No, or at least not with that syntax. You can use OutputMatrix(System_Type, 1)
If it is important that you pass the column name to another routine, then one way would be to pass it as an additional argument that you just use for whatever output purpose you need. Another way would be to construct a structure such as
colnames.ID_number = 1;
colnames.System_Type = 2;
colnames.Revision_Date = 3;
and then when you need to convert the field name to a value,
FieldName = 'System_Type';
[...]
OutputMatrix( colnames.(FieldName), 1)

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