Text_file_lookup(Lookup Table Name, “Column Name”, Value if notfound in table, Value found in table) The formula using lookup table data is as follows: Once you have referenced the lookup table with the Lookup Table Name parameter, you can access the data in the table by using a formula for the value of a parameter. As with parameter names, referencing a lookup table name is case and context sensitive. When you type in the name of a lookup table, you do not need to include the full path to the file, only the name and file extension. The location of your lookup tables is defined in your Revit.inifile. The Lookup Table Name parameter is used to identify which CSV file the family is referencing. A lookup table can provide the outside diameter dimension for each nominal diameter that exists in the table.
Outside diameter is slightly different, especially for different pipe materials. Pipe fittings, for example, have a nominal diameter that is used to identify the size, but the actual The data in lookup tables can be driven by design codes or manufacturing standards to ensure the graphical accuracy of your components.
They provide values for dimensions based on other dimensions within the family. Lookup tablesare CSV files that work like a type catalog.
#Revit 2011 tutorials install
When you install Revit MEP 2012, an extensive library of lookup tables is installed that can be referenced by families. These are primarily duct, conduit, and pipe-fitting families. This parameter exists in some families and can utilize a lookup table for dimensions. One coded parameter that is unique is the Lookup Table Name parameter.