how to get a expected plot for these values?

1 次查看（过去 30 天）

Shubham Mohan Tatpalliwar 2018-10-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/421564-how-to-get-a-expected-plot-for-these-values

评论： Shubham Mohan Tatpalliwar 2018-10-1

function [Kraftstoffverbrauch,Wi, Drehzahl, Drehmoment]=Kasus_1_4(Drehzahl, Drehmoment)
% Modify the dimensions 
nx = length(Drehzahl) ; 
ny = length(Drehmoment) ;

if nx > ny 
Drehmoment = linspace(min(Drehmoment),max(Drehmoment),nx ) ; 
elseif nx<ny
    Drehzahl = linspace(min(Drehzahl),max(Drehzahl),ny) ;
end
[num,txt,raw] = xlsread('Mappe1.xlsx') ;
Dz = num(:,1) ; Dz(isnan(Dz))= [ ];
A = num(:,2:end) ;
A(isnan(A(:,1)),:)=  [] ;
W = A(1:2:end,:) ;
Dm = A(2:2:end,:) ;
Dz1 = repmat(Dz,1,size(Dm,1)) ;
idx = ~isnan(Dm) ;
F = scatteredInterpolant([Dz1(idx) Dm(idx)],W(idx));

Wi = F(Drehzahl,Drehmoment);

Drehmoment2 = Drehmoment*3.0769*2.64;
Geschwindigkeit=  (Drehzahl/(3.07*2.64))*2.037*0.06;
Kraftstoffverbrauch= (2*3.14*(Drehmoment).*(Drehzahl))./(Wi*0.98*0.8.*(Geschwindigkeit)*600);
plot3(Drehzahl,Drehmoment,Kraftstoffverbrauch)
xlabel ('Drehzahl(1/min)');ylabel ('Drehmoment(N.m)'); zlabel ('Kraftstoffverbrauch(kWh/100km)');
title ('Drehmoment vs Drehzahl Diagram');
end

8 个评论
显示 6更早的评论隐藏 6更早的评论

JohnGalt 2018-10-1

aside from the labelling... the issue is that your inputs scale linearly with each other ... so of course you're going to get a straight line...

Shubham Mohan Tatpalliwar 2018-10-1

what changes should i make to get the expected one

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

KSSV 2018-10-1

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/421564-how-to-get-a-expected-plot-for-these-values#answer_339209

在 MATLAB Online 中打开

Should try something like this:

[num,txt,raw] = xlsread('Mappe1.xlsx') ;
% [num,txt,raw] = xlsread('Mappe1.xlsx') ;
x = num(:,1) ; x(isnan(x))= [ ];
A = num(:,2:end) ;
A(isnan(A(:,1)),:)=  [] ;
Y = A(1:2:end,:) ;
Z = A(2:2:end,:) ;
X = repmat(x,1,size(Y,1)) ;
contour(X,Y,Z','ShowText','on')