A more efficient way to do this calculation

Hi all,
I am creating a function that allows me to obtain certain data of Steel Members.
I have created limits that give an interval over which to select a particular member.

Here is my code:

function [HD_cols] = members(Ic);

HD400_1299 = [755000/100^4; 1655/100^2; 1299];
HD400_1202 = [664000/100^4; 1530/100^2; 1202];
HD400_1086 = [596000/100^4; 1386/100^2; 1086];
HD400_990 = [519000/100^4; 1262/100^2; 990];
HD400_900 = [450000/100^4; 1149/100^2; 900];
HD400_818 = [392000/100^4; 1043/100^2; 818];
HD400_744 = [342000/100^4; 948/100^2; 744];
HD400_677 = [300000/100^4; 863/100^2; 677];
HD400_634 = [274000/100^4; 808/100^2; 634];
HD400_592 = [250000/100^4; 755/100^2; 592];
HD400_551 = [226000/100^4; 701/100^2; 551];
HD400_509 = [204000/100^4; 649/100^2; 509];
HD400_463 = [180000/100^4; 590/100^2; 463];
HD400_421 = [160000/100^4; 537/100^2; 421];

T = table(HD400_1299,HD400_1202,HD400_1086,HD400_990,HD400_900,HD400_818,HD400_744,HD400_677,HD400_634,HD400_592,HD400_551,HD400_509,HD400_463,HD400_421);

for i = 1:length(Tx)-1
Limits(i) = (Tx(1,i)+Tx(1,i+1))/2;
end

if Ic > Limits(1)
Ic = HD400_1299
elseif Ic > Limits(2)
Ic = HD400_1202
elseif Ic > Limits(3)
Ic = HD400_1086
elseif Ic > Limits(4)
Ic = HD400_990
elseif Ic > Limits(5)
Ic = HD400_900
elseif Ic > Limits(6)
Ic = HD400_818
elseif Ic > Limits(7)
Ic = HD400_744
elseif Ic > Limits(8)
Ic = HD400_677
elseif Ic > Limits(9)
Ic = HD400_634
elseif Ic > Limits(10)
Ic = HD400_592
elseif Ic > Limits(11)
Ic = HD400_551
elseif Ic > Limits(12)
Ic = HD400_509
elseif Ic > Limits(13)
Ic = HD400_463
elseif Ic > Limits(14)
Ic = HD400_421
end

end
My request is, can somone show me how I can simplify and make more efficient my if statements? Perhaps I need to use a loop? I want to add more members to more script and typing like I have above is tedious and not very efficient. So, I’m hoping someone can help?

Many thanks,
ScottHi all,
I am creating a function that allows me to obtain certain data of Steel Members.
I have created limits that give an interval over which to select a particular member.

Here is my code:

function [HD_cols] = members(Ic);

T = table(HD400_1299,HD400_1202,HD400_1086,HD400_990,HD400_900,HD400_818,HD400_744,HD400_677,HD400_634,HD400_592,HD400_551,HD400_509,HD400_463,HD400_421);

for i = 1:length(Tx)-1
Limits(i) = (Tx(1,i)+Tx(1,i+1))/2;
end

Many thanks,
Scott Hi all,
I am creating a function that allows me to obtain certain data of Steel Members.
I have created limits that give an interval over which to select a particular member.

Here is my code:

function [HD_cols] = members(Ic);

T = table(HD400_1299,HD400_1202,HD400_1086,HD400_990,HD400_900,HD400_818,HD400_744,HD400_677,HD400_634,HD400_592,HD400_551,HD400_509,HD400_463,HD400_421);

for i = 1:length(Tx)-1
Limits(i) = (Tx(1,i)+Tx(1,i+1))/2;
end

Many thanks,
Scott for, loop, functions, if statement MATLAB Answers — New Questions

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