# Morris method

**URL:** <https://discourse.julialang.org/t/morris-method/35994>\
**Category:** New to Julia\
**Created:** [March 15, 2020, 12:05am UTC](https://discourse.julialang.org/t/morris-method/35994 "2020-03-15T00:05:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![vijaya](https://avatars.discourse-cdn.com/v4/letter/v/e47774/32.png) [@vijaya](https://discourse.julialang.org/u/vijaya)\
**Post date:** [March 15, 2020, 12:05am UTC](https://discourse.julialang.org/t/morris-method/35994/1 "2020-03-15T00:05:35Z")

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Hi  
In the global sensitvity analysis Morris method example (Lotka Volterra gsa), the input arguments are  
“total\_num\_trajectory=1000,num\_trajectory=150”

m = gsa(f1,Morris(total\_num\_trajectory=1000,num\_trajectory=150),[[1,5],[1,5],[1,5],[1,5]])

The number of parameters in the equations are 4 so generally in the Morris method the number of runs are r\*(p+1) where p is the number of parameters and r the number of different realizations. So here it would be total\_number should be 5xr and num\_traj should be 5. So I am unable to figure out how you get the number 1000 and 150 in the above example. Can you please clarifiy.  
Thanks  
Vijaya

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**Author:** ![baggepinnen](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/baggepinnen/32/693_2.png) [@baggepinnen](https://discourse.julialang.org/u/baggepinnen)\
**Post date:** [March 15, 2020, 4:41am UTC](https://discourse.julialang.org/t/morris-method/35994/2 "2020-03-15T04:41:23Z")

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You just posted this question here [Global sensitivity analysis Morris Method](https://discourse.julialang.org/t/global-sensitivity-analysis-morris-method/35967)  
Please refrain from spamming the same question multiple times.

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**Author:** ![vijaya](https://avatars.discourse-cdn.com/v4/letter/v/e47774/32.png) [@vijaya](https://discourse.julialang.org/u/vijaya)\
**Post date:** [March 15, 2020, 8:37am UTC](https://discourse.julialang.org/t/morris-method/35994/3 "2020-03-15T08:37:32Z")

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I posted it under the subtopic performance by mistake so re-posted under first steps. Your answer is not the solution.