Filter in matlab --> problem with mainscript

Hello!

I need some help with the following:

If we have a main script, and it does the following: 1. load data 2. filter data 3. statistics 4. plot 5. exit

And the project is about 4 types of bacteria in a matrix.( n x 3 ) And the 3 colomns describe: 1: temperature, 2: growthrate and 3: bacteriatype

we have done a lot of scripts : Load script, plot, and statistics. where we load data, plot all the bacteria types in a (x,y)-->(temperature/Growth rate) coordinate system, and the statistics is just calculating the mean temperature or Growth rate etc.

but then we get told to make two "filters" : 1. A filter for the Bacteria type, for example Bacteria=Listeria. 2. A range filter for the Growth rate, for example 0:5 Growth rate 1.

how do you assign a filter to ALL the scripts?

Thanks for your time!

[Ibrahim]

I know it is hard to answer a qquestion with no scripts in hand, but i will appreciate a theoretical answer :)