This code is in response to the i just posted

Question

Thashen Naidoo 2018-5-6

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/399318-this-code-is-in-response-to-the-i-just-posted

编辑： Walter Roberson 2018-5-8

metamorph.jpeg

%%standard model conditions 
K = 2.5;%Wm^-1 C^-1
A = 1.25; %uWm^-3
Q = 21*(10^-3); %Wm^-2 
d = 50; % km 
%%conditions for depth 
z = [0:2:50]; %%stop at 50
z; % km 
%%conditions for temperature 
T = [0:500:2500]; %%stop at 2500
T; % units to be in degrees celsius
function T = (-A*z^2)/(2K) + ((Q + A*d)/K)*(z);

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dpb 2018-5-6

We don't know what that was w/o looking it up...either edit the original question or add as a comment to it; do NOT start a totally new thread that is meaningless on its own...

Thashen Naidoo 2018-5-6

ok Thanks, I added the image of the Question. Im not sure how to specify all the variables and then change the variables to give a certain output. The desired result is to get a graph that indicates all the trends asked for in the question Thanks

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Answer 1

Star Strider 2018-5-6

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/399318-this-code-is-in-response-to-the-i-just-posted#answer_318918

在 MATLAB Online 中打开

This will get you started:

%%standard model conditions 
K = 2.5;%Wm^-1 C^-1
A = 1.25; %uWm^-3
Q = 21E-3; %Wm^-2 
d = 50; % km 
%%conditions for depth 
z = [0:2:50]; %%stop at 50 z; km 
%%conditions for temperature 
% T = [0:500:2500]; %%stop at 2500 T; units to be in degrees celsius
T = (-A*z.^2)/(2*K) + ((Q + A*d)/K)*(z);
plot(T, z)
set(gca, 'YDir','reverse')

I leave the rest to you.

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Thashen Naidoo 2018-5-6

Thank you so much, that plot will only work for the standard model, How do create a code that will allow me to vary the parameters as in the question and then plot all on the same graph Thank you so much for your help

Star Strider 2018-5-6

My pleasure.

This is a homework problem, so we give only limited help and suggestions to get you started.

‘How do create a code that will allow me to vary the parameters as in the question and then plot all on the same graph’

There are several options. I would do a separate calculation for each of (a), (b), and (c), since you are varying different parameters in each one.

For (d) and (e), you can use a for (link) loop to loop through them, since you are varying the same parameter. You first need to create a (1x2) vector for the ‘basal heat flow’ values. Also see the documentation on Matrix Indexing (link) to understand how to create one matrix for the results in (d) and (e).

I leave the rest to you.

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