Dear Power Users, I tried to make a model in Maple but after several hours of struggling I need some help. Can someone tell me what I did wrong or explain to me what is the meaning of the maplemint comment on procedure (optimalisatie)? Thank you in advance.

DiLeoCasper.mw 

I was wondering whether it is possible to execute Python code into Maple. As an example, I give a fairly simple code:

Concentration_calculation(C_0, Q, V_r, m_b, rho, R, Gamma_i, delta_t=1):
t = np.arange(0, 360*60, delta_t)
C_i = [C_0]
for i in range(len(t)-1):
dC = -(Q/V_r)*(1-math.exp(-3*m_b*math.sqrt(Gamma_i/(rho*t[i+1]))/(math.sqrt(math.pi)*Q*R)))*C_i[i]
C_i.append(C_i[i] + dC*delta_t)
return t, C_i

Any help in tis respect would be highly appreciated.

Dear power users, I am making the switch from Mathcad towards Maple and would like to know what is the most efficient alternative in Maple for a solve block. I have attached a work document to illustrate better my question.SolveBlockQuestion.mw Any help is highly appreciated.

In a dataframe you can easily replace 'undefined' by another value using FillMissing. However, if you want to remove the row in which a cell contained 'undefined' this seems not to be possible. 'DropMissing' will remove the complete column in which one of the cells contains 'undefined'. Is there another command that removes the row of the dataframe as a column contains an 'undefined'? Sorry for the simplistic question but I am still in my learning curve. 

acer helped me out last week with converting strings to dates which was very helpful. However now I stumble on 2 other problems:

- I do not succeed to plot DS6 (time difference versus a numeric value) and to not understand why

- in the cvs data sheet the length of the columns is not equal. The empty cells are automatical filled with "". This prevents me to use numelems as it will also take into consideration the cells filled with "". Is there a way to prevent this

As usual I would like to thank you all, power users, for your patience and help

Test.mw