matlab使用me​sh函数，出现了底面​，如何去掉？。

出现的这个地面如何去掉呢？

程序如下：c=3*10^8;

lemdal=1550E-12;

ommiga=lemdal*c;

syms z;

z=90:1:150;

K=exp(-(z-125)/6);

Vin=100*K;

me=9.3E-31;

e=1.6E-19;

chi=45/180*pi;

q0=4.7E3;alpha=1.6E-7;

H=(z-105)./10;

Ne=sqrt(q0/alpha).*exp(1/2.*(1-H-1./cos(chi).*exp(-H)));

epsilong0=8.85E-12;

ommiga_p=sqrt((Ne.'*e^2)./(me*epsilong0));

elta=sqrt(1-ommiga_p.^2./(ommiga.^2+i*ommiga*Vin));

k=imag(elta);

Aref=lemdal*k;

Aabs=sqrt(-1/2.*(1-ommiga_p.^2./(ommiga.^2+Vin.^2))+1/2.*sqrt((1-ommiga_p.^2./(ommiga.^2+Vin.^2)).^2+(Vin./ommiga.*(ommiga_p.^2./(ommiga.^2+Vin.^2))).^2));

fun=@(z)(Aref+Aabs);

Aatt=integral(fun,90,150,'ArrayValued',true);

vpa(Aatt);

Ne1=Ne(1,:);

z1=z(1,:);

[z1,Ne1] = meshgrid(90:1:150, 2.5151e+04:2.9550e+04);

mesh(Ne,z,Aatt)

brighten(0.5)

Answer 1

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c=3*10^8;

lemdal=1550E-12;

ommiga=lemdal*c;

syms z;

z=90:1:150;

K=exp(-(z-125)/6);

Vin=100*K;

me=9.3E-31;

e=1.6E-19;

chi=45/180*pi;

q0=4.7E3;alpha=1.6E-7;

H=(z-105)./10;

Ne=sqrt(q0/alpha).*exp(1/2.*(1-H-1./cos(chi).*exp(-H)));

epsilong0=8.85E-12;

ommiga_p=sqrt((Ne.'*e^2)./(me*epsilong0));

elta=sqrt(1-ommiga_p.^2./(ommiga.^2+i*ommiga*Vin));

k=imag(elta);

Aref=lemdal*k;

Aabs=sqrt(-1/2.*(1-ommiga_p.^2./(ommiga.^2+Vin.^2))+1/2.*sqrt((1-ommiga_p.^2./(ommiga.^2+Vin.^2)).^2+(Vin./ommiga.*(ommiga_p.^2./(ommiga.^2+Vin.^2))).^2));

fun=@(z)(Aref+Aabs);

Aatt=integral(fun,90,150,'ArrayValued',true);

vpa(Aatt);

[z1,Ne1] = meshgrid(z,Ne);

mesh(z1,Ne1,Aatt)

brighten(0.5)