add stomach LH data

[vbartolino]

I'm trying to add a stomach LH in a 2 species model (cod-sprat). I've tried 1 simulation in the terminal, I continue to get the same error and I haven't been able to figure out the reason. Thankful for any suggestion where to look.

Finished reading model data files, starting to run simulation Error when checking length structure for the following lengthgroups Minimum length of length group division is 1 Maximum length of length group division is 137 Minimum length of length group division is 20 Maximum length of length group division is 100 Error in predatoraggregator - invalid predator length group structure

This is how I've set the lengths in the stockfiles and aggrfiles:

• cod.stock minlength, maxlength, bin: 1, 137, 2
• predator aggrfile len20 20 40 len40 40 60 len60 60 80 len80 80 100
• stomachData ;year step area predator prey ratio 2007 4 area1 len20 sprat10 0.012820513 2007 4 area1 len20 sprat11 0.012820513 2007 4 area1 len20 sprat12 0.029914530 as predator I've used the label in the predator aggrfile (and similarly for the prey)

[bthe]

I guess your problem is related to the definition of length bins. The aggregation file doesn't match your definition of length bin for the stock. That is the stock dynamics is calculated in terms of odd numbers while the predator agg file is in even numbers.

[jmbegley]

It's some time since I looked at this, but isn't the problem the fact that the predator aggregation bins start at 20cm but the stock is defined down to 1cm (and the maximum length in the aggregation file is 100cm but the stock is defined up to 137cm)? If you create a new entry in the predator aggregation file of "len10 1 20" (for example) and another one for the maximum lengths of "len100 100 137" does it get a little further?

[vbartolino]

Yes, the mismatch between the length bin in the stock and the aggregation file (odd and even numbers) was the cause. As far as I can see the min and max length in the predator aggregation file do not have to be the same as in the stock file (which make sense to me). Thanks for the prompt and effective reply.

James, nice to see you back on the old good Gadget :)