if statement problem with excel file

2013 11 4
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更新时间：2013 11 5
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hi to everyone!i don't know how to manage this problem: i have two block functions that have to run in function of an Excel file. This file is a vector that for every hour of the year shows a 1 or 2. If the hour is connected to a 1, one block function has to work otherwise for the other one in case of a 2. How i can manage this?thank you very much for your support!

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Niklas Nylén
Niklas Nylén 2013-11-4

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The first step would be to import the data from the excel file into Matlab by using the xlsread function. Then reformat the data to be readable by a 'From workspace' block in Simulink (which I assume we are talking about when you write "block function").

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federico
federico 2013-11-4
yeah i'm working in Simulink and i've done it. It is a .mat vector 2X8760, where first row are the hours/year while the second row is the 1 or 2 sequence. I linked it in a if-then-else block, based on the sequence (condition is u(1)>1) and connected to two subsystem but it does not recognized the conditions. The subsytems both work despite the "if" condition. How i can resolve it?Thank you for the help!
Niklas Nylén
Niklas Nylén 2013-11-5
编辑：Niklas Nylén 2013-11-5
Depending on what you want to accomplish, an if-block is possibly not the right choice for you. Here is how you use if/else-blocks: http://www.mathworks.se/help/releases/R2013b/simulink/slref/if_block_floating_point_model.png
If you just want to enable or disable subsystems, you should probably have a look at enabled subsystems: http://www.mathworks.se/help/simulink/ug/enabled-subsystems.html

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