[idvusers] IDV formulas

• To: <idvusers@xxxxxxxxxxxxxxxx>
• Subject: [idvusers] IDV formulas
• From: "Luis Del Castillo" <luis.delcastillo@xxxxxxxxxxxx>
• Date: Tue, 7 Dec 2010 15:16:17 -0500

Hi fellows

I am wondering which one would be the best way to create a new dynamic formula? 
I am trying to design a land slide model using 4 static variables  using  the 
method Mora-Vahrson and the equation is  H = (Sr*SI*Sh)*(Ts + Tp) . 

Since I start to work with this I just began to create the formula just like 
that Formula à New Formulaà (Sr*SI*Sh)*(Ts + Tp) but I just realize that even I 
saw and output display the data are wrong  so I start to plot values one by one 
first layer Sr second layer SI and so on, then I plot values for the layer H 
and the values was not correct. 

One month ago I make a post here and Tom Whittaker said this to me "had some 
time before leaving to download and look at your files.  The problem is that 
the units of the two grids are not compatible".  Said that I create a formula 
like this: 

 

(newUnit(Sr, "ries", "R")*newUnit(SI, "ries", "R")*newUnit(Sh, "ries", 
"R"))*(newUnit(Ts, "ries", "R") + (newUnit(P, "ries", "R") + newUnit(P1, 
"ries", "R") + newUnit(P2, "ries", "R"))) 

 

I am wondering how can I create a procedure in jython thinking in the issues 
about  the units because I have 4 static layers with units = degrees and one 
dynamic = mm 

 

I don't know if I am explaining correctly  

 

 

 

Luis Alejandro Del Castillo Riley

luis.delcastillo@xxxxxxxxxxxx

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  • Re: [idvusers] IDV formulas
    • From: Tom Whittaker