why do I receive error "Not enough Argument"
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Hello
I am writting codes to a s-function block to create demo or animate of a liquid Tank ,but I have a problem which is "not enough Arguments".I am not sure if you know what is the problem,I have paste my written codes below.
Thank you
function [sys,x0,str,ts,setPt1,setPt2,waterx1,vessel1Hndl,vessel1Ht, vesselHndlList,waterY1,vessel2Hndl,lineHndl1,lineHndl2]=vesseldemo2project (u,flag,t,x)
switch flag==4
case 0
[sys,x0,str,ts,vesseldemo2project]=mdlInitializeSizes;
get(vesseldemo2project,'UserData') =vesselHndlList;
get( vesselHndlList(1),'YData');
yData(1)=yOffset;
yData(3:4)=[1 1]*u(2)+yOffset;
set( vesselHndlList(1),'YData',yData);
yData=get(x(2),'YData');
yData([3 4])=[1 1]*u(2)+yOffset;
set(x(2),'YData',yData);
yData=[1 1]*u(1)+1;
set(x(3),'YData',yData);
case 2
%Tank body details.................................
sys=mdlUpdate(t,x,u);
vessel1Ht=1;
vessel1Wid=1;
vessel1Init=0;
setPt1=0.5;
setPt2=0.75;
vesselx=[0 0 1 1]-0.5;
vesselY=[1 0 0 1];
line(1.1*vesselx*vessel1Wid+1,vesselY*vessel1Ht+0.95,'LineWidth',2,'Color','black');
% Draw the water..............................................
waterx1=vesselx*vessel1Wid+1;
waterx=vesselY*vessel1Init+1;
x=patch(waterx,waterx,'blue','EdgeColor','none');
% Draw the gray wall............................................
waterY1([1 2 5])=vessel1Ht*[1 1 1]+1;
waterY([3 4 ])=x*[1 1 ]+1;
vessel2Hndl=patch(waterx,waterY,[.9 .9 .9],'EdgeColor','none');
case 3
str = [];
ts = [.1 0];
vessel1Wid=1;
vessel1Ht=1;
vessel1Init=0;
setPt1=0.5;
setPt2=0.75;
vesselx=[0 0 1 1]-0.5;
vesselY=[1 0 0 1];
waterx1=vesselx*vessel1Wid+1;
waterx=vesselY*vessel1Init+1;
waterY1([1 2 5])=vessel1Ht*[1 1 1]+1;
waterY([3 4 ])=vessel1Init*[1 1 ]+1;
vessel1Hndl=patch(waterx,waterx,'blue','EdgeColor','none');
vessel2Hndl=patch(waterx,waterY,[.9 .9 .9],'EdgeColor','none');
lineHndl1=line([0 0.4],setPt1*[0.5 0.5]+1,'Color','red','LineWidth',4);
hlod on
lineHndl2=line([0 0.4],setPt2*[0.75 0.75]+1,'Color','red','LineWidth',4);
hold on
set(gcf, ...
'Color',[.9 .9 .9], ...
'UserData',[vessel1Hndl vessel2Hndl lineHndl]);
set(gca, ...
'XLim',[0 2],'YLim',[0 3.5], ...
'XColor','black','YColor','black', ...
'Box','on');
axis equal
xlabel('Water Level Control','Color','black','FontSize',10);
set(get(gca,'XLabel'),'Visible','on');
x0=0;
otherwise
error(message('vesseldemo:vesseldemo2project:UnhandledFlag', flag));
end
2 个评论
Piyush Aggarwal
2020-11-9
"Not enough arguments" error is simply an indicative of the fact that you are calling some MATLAB/user-defined function with the wrong syntactical signature. You will need to pass correct number of inputs arguments to any function. Look closely at the exact error message you are recieving. It will tell you which line and which function is causing the trouble.
KEYVAN PEBDANI SAHRAEI
2020-11-9
采纳的回答
Walter Roberson
2020-12-13
Note: you are using a Level 1 S-Function inside of Simulink
get(vesseldemo2project,'UserData') =vesselHndlList;
That attempts to assign a value to an array named get indexed at integer locations indicated by vesseldemo2project and the offsets calculated by converting the character vector 'UserData' into character codes. This is not at all likely to be what you want.
More likely would be
vesselHndlList = get(vesseldemo2project,'UserData');
If this is not enough to fix the problem, you will need to post more of the error message, showing which line it is complaining about.
5 个评论
KEYVAN PEBDANI SAHRAEI
2020-12-13
Walter Roberson
2020-12-13
Ah, your function itself is named vesseldemo2project, so the line you had
get(vesseldemo2project,'UserData') =vesselHndlList;
would have attempted to call the same function you are executing except with no inputs, expecting it to return something that you could get() the UserData field from. But that fails because the function needs input arguments.
Based upon later lines, I think you should be using
vesselHndlList = get(gcf,'UserData');
KEYVAN PEBDANI SAHRAEI
2020-12-13
Walter Roberson
2020-12-13
The file is intended to be called from Simulink by configuring it through an S-Function Block. If you call it at the MATLAB level, you need to pass in at least four variables (possibly 5 for that code). The four major ones are documented at the link I posted at the top of my Answer.
KEYVAN PEBDANI SAHRAEI
2020-12-13
更多回答（1 个）
Abhisek Pradhan
2020-12-13
1 个投票
This may be a case of defining and calling the function in the same script. If this is the case try separating them out and see if it works.
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