MEP Calculated Values in Shared Parameter

HeinWelman — Sat, 20 Apr 2013 16:53:50 GMT

Is there any way of calculating a value from two existing parameters and reporting it to a Shared Parameter by using the Revit API?

My aim is to use this in a Tag to display a different flow value through a pipe.

I have seen a plugin doing it for Room Area and occupancy.

The image attached shows the parameters i'm using,

"Pressure Factor" & CW Flow are Shared Parameters.

The result im looking for:

"Flow/Pressure Factor=CW Flow"

Thanks

Re: MEP Calculated Values in Shared Parameter

Joe.Ye — Sat, 27 Apr 2013 06:08:43 GMT

Hi,

This is possible to be done by Revit API.

You can read the two shared parameters value first, then calculate the value Flow/Pressure Factor, finally assign the value to CW flow parameter.

here is the code fragment

Pipe pipe = null;

//pipe is the target pipe. retrieve one target pipe and assign it to pipe variable.

Parameter flowParam = pipe.get_Parameter("Flow");

Double flowValue = flowParam.AsDouble();

Parameer pressureParam = pipe.get_Parameter("Pressure Factor");

Double pressureValue = pressureParam.AsDouble();

double cw = flowValue/PressureValue;

pipe.get_Parameter("CW Flow").Set(cw);

Hope this helps.