Hello dear altruist,
in need of help here. I need to add a second x-axis to the top of my graph here:
I tried from my end and this is the result. The x-axis on top is just normalized scale from 0 to 1 in reverse. Basically, the x-axis values at the top needs to be the inverse of the variable below (2*pi/kx). This would help me visualize the data both in terms of wavevector and wavelength. The codes and files are attached herwith. Thanks in advance.
clc; clear all;load infinite;% transpose matrix is not required
A1= log10(fs1);kx=ky;h1=figurep1=pcolor(kx*1e-6,f/1e12,A1);xlabel('\it{k_x} (\rm{\times10^6 m^{-1}})');ylabel('{\itf} (THz)');ylim([33 1600]);set(h1, 'Units', 'normalized');get(h1, 'Position');set(h1,'Position',[ 0.12 0.22 0.18 0.33]);%colormap setting needs to come after each subplot
shading interp;colormap jet(500);%colormap need to be set to jet for Blue-yellow-red map
ax1 = gca; % current axes
ax1_pos = ax1.Position; % position of first axes
ax2 = axes('Position',ax1_pos,'XAxisLocation','top','YAxisLocation','right','Color','none','YTick',[],'TickLength',[.00014 .0014]);xlabel(ax2,'\rm lambda(\mum)');l=(2*pi)/ky;% L=length(l);
% y=zeros(L);
hold(ax2,'on');% plot(ax2,l*1e7,y);
% line(l*1e7,y,'Parent',ax2,'Color','k');
set(ax2,'XDir','reverse');% set(gcf,'visible','off');
%font properties
FS='Fontsize';fs1=20;fs2=20;FN='Fontname';fn='Times New Roman';set(findall(gcf,'type','axes'),FS,fs1,FN,fn);set(findall(gcf,'type','text'),FS,fs2,FN,fn);x0=100;y0=100;width=700;height=500;set(gcf,'units','pixels','position',[x0,y0,width,height]);
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