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Error Unexpected MATLAB expression.

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Muhammad Fauzan
Muhammad Fauzan 2021-7-28
回答： Rik 2021-7-28
Dy = 10; Dz = 10;
lambda = 0.0001;
a = 90;
v = 3;
Q1 = 1000;
%
xs1 = 2000; ys1 = -1000;xs5 = 2000; ys5 = -2000;xs9 = 6000; ys9 = -2000;
xs2 = 4000; ys2 = 2000;xs6 = 3000; ys6 = 1000;xs10 = 7000; ys10 = 1900;
xs3 = 100; ys3 = 1500;xs7 = 1000; ys7 = -1000;xs11 = 3000; ys11 = 2500;
xs4 = 1000; ys4 = -100;xs8 = 500; ys8 = 2500;xs12 = 8000; ys12 = -1000;
xmin = 0; xmax = 1000;
ymin = -4000; ymax = 4000;
H1 = 100;
%
z = 1.5;
gplot = 1;
gcont = 2;
[x,y] = meshgrid(linspace(xmin,xmax,100),linspace(ymin,ymax,100));
e = ones(size(x));
aa = (90-a)*pi/180;
xx1 = (x - xs1)*cos(aa) - (ys1 - y)*sin(aa); yy1 = (y - ys1)*cos(aa) + (xs1 - x)*sin(aa);
xx2 = (x - xs2)*cos(aa) - (ys2 - y)*sin(aa); yy2 = (y - ys2)*cos(aa) + (xs2 - x)*sin(aa);
xx3 = (x - xs3)*cos(aa) - (ys3 - y)*sin(aa); yy3 = (y - ys3)*cos(aa) + (xs3 - x)*sin(aa);
xx4 = (x - xs4)*cos(aa) - (ys4 - y)*sin(aa); yy4 = (y - ys4)*cos(aa) + (xs4 - x)*sin(aa);
xx5 = (x - xs5)*cos(aa) - (ys5 - y)*sin(aa); yy5 = (y - ys5)*cos(aa) + (xs5 - x)*sin(aa);
xx6 = (x - xs6)*cos(aa) - (ys6 - y)*sin(aa); yy6 = (y - ys6)*cos(aa) + (xs6 - x)*sin(aa);
xx7 = (x - xs7)*cos(aa) - (ys7 - y)*sin(aa); yy7 = (y - ys7)*cos(aa) + (xs7 - x)*sin(aa);
xx8 = (x - xs8)*cos(aa) - (ys8 - y)*sin(aa); yy8 = (y - ys8)*cos(aa) + (xs8 - x)*sin(aa);
xx9 = (x - xs9)*cos(aa) - (ys9 - y)*sin(aa); yy9 = (y - ys9)*cos(aa) + (xs9 - x)*sin(aa);
xx10 = (x - xs10)*cos(aa) - (ys10 - y)*sin(aa); yy10 = (y - ys10)*cos(aa) + (xs10 - x)*sin(aa);
xx11 = (x - xs11)*cos(aa) - (ys11 - y)*sin(aa); yy11 = (y - ys11)*cos(aa) + (xs11 - x)*sin(aa);
xx12 = (x - xs12)*cos(aa) - (ys12 - y)*sin(aa); yy12 = (y - ys12)*cos(aa) + (xs12 - x)*sin(aa);
c1 = 1000*Q1*e./(4*pi*(xx1>0).*xx1*sqrt(Dy*Dz)*v).*exp(-v*yy1.*yy1./(4*Dy*(xx1>0.*(exp(-v*(z-H1)*e./(4*Dz*(xx1>0).*xx1)).*(exp(-v*(z-H1)*e))))));
c1(isinf(c1))=0; c1(isnan(c1))0;
Error Unexpected MATLAB expression in c1(isinf(c1))=0; c1(isnan(c1))0;
Please Help me!!

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回答（1 个）

Rik
Rik 2021-7-28
You were missing an equal sign:
c1(isinf(c1))=0; c1(isnan(c1))=0;
% ^
% this one was missing

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