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vantri23

25/02/2011 10:07:22

Hi, I have tried to calculate event duration grid from a 1D model. I have followed all the required steps, including: 1. setting the 'lower limit' (but NOT the 'upper limit') 2. setting the 'tasks' (but not the 'Combi Grids') 3. the result was saved in the ASCIIGrid When the 'Proceed' button was hit, a message 'Flood Calculation has completed' appears. However, when checking the result file, there was nothing except -9999 value. Can anyone help? Best regards, Tri Van

Yong Wang

Flood Modeller Support

25/02/2011 10:35:20

Hi Tri Van, I have confused lower limit with threshold in my previous post. Lower limit sets a value that below which data are invalid. Sorry for that. Regards, Yong Hi Tri Van, It is worth checking you have a valid TIN and valid ISIS result loaded (CSV or binary) onto the TIN. Also make sure the lower limit is not higher than the maximum values in the TIN result. Regards, Yong. Update:

Yong Wang

Flood Modeller Support

25/02/2011 14:18:20

Hi Tri Van, How big is your grid/TIN? "Frozen" normally indicates it is busy calculating. If the model is very big and there are lots of time step in the TIN results. I may take some time to calculate. How long does ISIS Mapper keep frozen for? Regards, Yong

vantri23

25/02/2011 14:21:46

Hi Yong, You are completely right. I have tried another smaller model and can extract the duration map. Many thanks for your help, Yong. Best regards, Tri Van

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