How to change colormap based on z axis instead of y?

 
m=1;
%for m0=m=1
a=[0.636083933250372	0.212144382452125	0.0546892460944343	0.0811463126813785	0.0632774202126715	0.0562362171623843	0.0259131446756141	0.0354818222871739	0.0298812592457789	0.0257320939228473	0.0280840192189613	0.0154417739176394	0.0219552916746526	0.0195309258046508	0.0177406876770164	0.0170436180598679	0.0159776243553216	0.0151065623747937	0.0141630207464681	0.0120053692458791	0.0132297854767847	0.0105327350990362	0.0113560997799302	0.0110403184785192	0.0107906216617112	0.00965577268290680	0.00914800573096540	0.00939010508156453	0.00863569909353547	0.00811363665437132	0.00739932175763486	0.00782669890779222	0.00738448131419648	0.00719169948703580	0.00701385639284818	0.00596714585373073	0.00681989279886123	0.00639705878220211	0.00618647103207434	0.00600566361516922	0.00583327612646872	0.00223670709257374	0.00324888153217301	0.00177500910550813	0.00518658415713255	0.00488620011906528	0.00494929771417536	0.00474426340312584	0.00493698235122460	0.00484960741930230];
%for m0=0;
b=[0.00189556461205064	0.0456022928580212	0.0230374230583075	0.00465070019848336	0.00554094114694245	0.00215509807136384	0.00871713906558309	0.00387255244663482	0.00399544000350898	0.00435602086998625	0.00176873734569403	0.00501804904823206	0.00155464950684832	0.00164198976972907	0.00165198648715387	0.00157591055956975	0.00147253697899992	0.00152315325257481	0.00153689490345905	0.00200902938283806	0.00122463864364983	0.00192406567959340	0.00139704766840847	0.00131455885641305	0.00118818373143456	0.00135993322760032	0.00139859828103272	0.00115597327565545	0.00123220277279522	0.00126992289153737	0.00146233791862794	0.00117829401295292	0.00121975023758159	0.00119112277691794	0.00113525301230561	0.00138505108495600	0.000999986581559371	0.00107205149342070	0.00106211726981811	0.00102730498740808	0.000999241109613124	0.00135081047086154	0.00146659042839456	0.00118971057264901	0.000968334704691999	0.00101162244435133	0.000934737809385805	0.000959941768795119	0.000836451202409678	0.000829932259152043];
%for m0=2
c=[0.00189556461205064	0.0456022928580212	0.0230374230583075	0.00465070019848336	0.00554094114694245	0.00215509807136384	0.00871713906558309	0.00387255244663482	0.00399544000350898	0.00435602086998625	0.00176873734569403	0.00501804904823206	0.00155464950684832	0.00164198976972907	0.00165198648715387	0.00157591055956975	0.00147253697899992	0.00152315325257481	0.00153689490345905	0.00200902938283806	0.00122463864364983	0.00192406567959340	0.00139704766840847	0.00131455885641305	0.00118818373143456	0.00135993322760032	0.00139859828103272	0.00115597327565545	0.00123220277279522	0.00126992289153737	0.00146233791862794	0.00117829401295292	0.00121975023758159	0.00119112277691794	0.00113525301230561	0.00138505108495600	0.000999986581559371	0.00107205149342070	0.00106211726981811	0.00102730498740808	0.000999241109613124	0.00135081047086154	0.00146659042839456	0.00118971057264901	0.000968334704691999	0.00101162244435133	0.000934737809385805	0.000959941768795119	0.000836451202409678	0.000829932259152043];
y = [0 1 2];
z = [ b; a; c];
bar3(y,z);colorbar ;

Answer 1

[Cris LaPierre]

See this page: Color 3-D Bars by Height

a=[0.636083933250372	0.212144382452125	0.0546892460944343	0.0811463126813785	0.0632774202126715	0.0562362171623843	0.0259131446756141	0.0354818222871739	0.0298812592457789	0.0257320939228473	0.0280840192189613	0.0154417739176394	0.0219552916746526	0.0195309258046508	0.0177406876770164	0.0170436180598679	0.0159776243553216	0.0151065623747937	0.0141630207464681	0.0120053692458791	0.0132297854767847	0.0105327350990362	0.0113560997799302	0.0110403184785192	0.0107906216617112	0.00965577268290680	0.00914800573096540	0.00939010508156453	0.00863569909353547	0.00811363665437132	0.00739932175763486	0.00782669890779222	0.00738448131419648	0.00719169948703580	0.00701385639284818	0.00596714585373073	0.00681989279886123	0.00639705878220211	0.00618647103207434	0.00600566361516922	0.00583327612646872	0.00223670709257374	0.00324888153217301	0.00177500910550813	0.00518658415713255	0.00488620011906528	0.00494929771417536	0.00474426340312584	0.00493698235122460	0.00484960741930230];
b=[0.00189556461205064	0.0456022928580212	0.0230374230583075	0.00465070019848336	0.00554094114694245	0.00215509807136384	0.00871713906558309	0.00387255244663482	0.00399544000350898	0.00435602086998625	0.00176873734569403	0.00501804904823206	0.00155464950684832	0.00164198976972907	0.00165198648715387	0.00157591055956975	0.00147253697899992	0.00152315325257481	0.00153689490345905	0.00200902938283806	0.00122463864364983	0.00192406567959340	0.00139704766840847	0.00131455885641305	0.00118818373143456	0.00135993322760032	0.00139859828103272	0.00115597327565545	0.00123220277279522	0.00126992289153737	0.00146233791862794	0.00117829401295292	0.00121975023758159	0.00119112277691794	0.00113525301230561	0.00138505108495600	0.000999986581559371	0.00107205149342070	0.00106211726981811	0.00102730498740808	0.000999241109613124	0.00135081047086154	0.00146659042839456	0.00118971057264901	0.000968334704691999	0.00101162244435133	0.000934737809385805	0.000959941768795119	0.000836451202409678	0.000829932259152043];
c=[0.00189556461205064	0.0456022928580212	0.0230374230583075	0.00465070019848336	0.00554094114694245	0.00215509807136384	0.00871713906558309	0.00387255244663482	0.00399544000350898	0.00435602086998625	0.00176873734569403	0.00501804904823206	0.00155464950684832	0.00164198976972907	0.00165198648715387	0.00157591055956975	0.00147253697899992	0.00152315325257481	0.00153689490345905	0.00200902938283806	0.00122463864364983	0.00192406567959340	0.00139704766840847	0.00131455885641305	0.00118818373143456	0.00135993322760032	0.00139859828103272	0.00115597327565545	0.00123220277279522	0.00126992289153737	0.00146233791862794	0.00117829401295292	0.00121975023758159	0.00119112277691794	0.00113525301230561	0.00138505108495600	0.000999986581559371	0.00107205149342070	0.00106211726981811	0.00102730498740808	0.000999241109613124	0.00135081047086154	0.00146659042839456	0.00118971057264901	0.000968334704691999	0.00101162244435133	0.000934737809385805	0.000959941768795119	0.000836451202409678	0.000829932259152043];

y = [0 1 2];
z = [ b; a; c];
b = bar3(y,z);
colorbar ;

for k = 1:length(b)
    zdata = b(k).ZData;
    b(k).CData = zdata;
    b(k).FaceColor = 'interp';
end

[Athira T Das]

@Cris LaPierre Thank you! How can I label x, y, z axis in bar3? I need to change y axis values from (0 to 50 ) to (-25 to 25) and need to label as z

[Cris LaPierre]

Labels are done using xlabel, ylabel, and zlabel,

Tick labels are similar: xticklabels, yticklabels, and zticklabels

Change the tick locations using: xticks, yticks, and zticks.

Answer 2

[Adam Danz]

This version assigns a solid color for each bar, based on bar height.

z = randg(1,5,3); 
h = bar3(z);

for i = 1:numel(h)
    h(i).CData = repelem(z(:,i),6,4);
end