supdeq_plotGrid

% SUpDEq - Spatial Upsampling by Directional Equalization

 function supdeq_plotGrid( samplingGrid )

 This function plots the spatial sampling grid on a sphere and on a 2D map

 Output:
 Figure

 Input:
 samplingGrid  - Spatial sampling grid (Q x 2 matrix), where the first 
                 column holds the azimuth and the second the
                 elevation (both in degree).
                 Azimuth in degree (0=front, 90=left, 180=back, 270=right)
                 (0 points to positive x-axis, 90 to positive y-axis)
                 Elevations in degree (0=North Pole, 90=front, 180=South Pole)
                 (0 points to positive z-axis, 180 to negative z-axis)
 plotMode      - 'default' or 'gray', 'gray' is independent on sample size
                  and delivers no map plot
                 Default: 'default'

 Dependencies: -

 (C) 2018 by JMA, Johannes M. Arend
             TH Köln - University of Applied Sciences
             Institute of Communications Engineering
             Department of Acoustics and Audio Signal Processing

0001 %% SUpDEq - Spatial Upsampling by Directional Equalization
0002 %
0003 % function supdeq_plotGrid( samplingGrid )
0004 %
0005 % This function plots the spatial sampling grid on a sphere and on a 2D map
0006 %
0007 % Output:
0008 % Figure
0009 %
0010 % Input:
0011 % samplingGrid  - Spatial sampling grid (Q x 2 matrix), where the first
0012 %                 column holds the azimuth and the second the
0013 %                 elevation (both in degree).
0014 %                 Azimuth in degree (0=front, 90=left, 180=back, 270=right)
0015 %                 (0 points to positive x-axis, 90 to positive y-axis)
0016 %                 Elevations in degree (0=North Pole, 90=front, 180=South Pole)
0017 %                 (0 points to positive z-axis, 180 to negative z-axis)
0018 % plotMode      - 'default' or 'gray', 'gray' is independent on sample size
0019 %                  and delivers no map plot
0020 %                 Default: 'default'
0021 %
0022 % Dependencies: -
0023 %
0024 % (C) 2018 by JMA, Johannes M. Arend
0025 %             TH Köln - University of Applied Sciences
0026 %             Institute of Communications Engineering
0027 %             Department of Acoustics and Audio Signal Processing
0028 
0029 %%
0030 function supdeq_plotGrid ( samplingGrid, plotMode )
0031 
0032 if nargin < 2
0033     plotMode = 'default';
0034 end
0035 
0036 samplingGridRad(:,1) = samplingGrid(:,1) * pi / 180;
0037 samplingGridRad(:,2) = samplingGrid(:,2) * pi / 180;
0038 [Xm,Ym,Zm]=sph2cart(samplingGridRad(:,1),pi/2-samplingGridRad(:,2),1.01);
0039 
0040 
0041 if strcmp(plotMode,'default')
0042 
0043     figure %Sphere plot
0044     colormap Gray;
0045     if size(Xm,1)>1500
0046         plot3(Xm,Ym,Zm,'marker','.','markerfacecolor','g','color','g','linestyle','none')
0047     else
0048         plot3(Xm,Ym,Zm,'marker','o','markerfacecolor','g','color','g','linestyle','none')
0049     end
0050 
0051     axis off;
0052     hold on;
0053     grid off;
0054     sphere;
0055     axis equal;
0056     rotate3d on;
0057     light;
0058     alpha(.8);
0059     lighting phong;
0060     camzoom(1.4);
0061     view(0,0)
0062     hold off;
0063 
0064     figure %Map plot
0065     plot(samplingGrid(:,1),samplingGrid(:,2),'.')
0066     set(gca, 'YDir','reverse')
0067     xlim([-10 369])
0068     ylim([-10 190])
0069     xlabel('Azimuth [°]');
0070     ylabel('Elevation [°]');
0071 
0072 elseif strcmp(plotMode,'gray')
0073     
0074     %figure %Sphere plot
0075     colormap Gray;
0076     
0077     plot3(Xm,Ym,Zm,'marker','o','markerfacecolor','k','color','k','linestyle','none','markersize', 1.5*8)
0078 
0079     axis off; 
0080     grid off; 
0081     hold on; 
0082     sphere; 
0083     shading interp; 
0084     axis equal; 
0085     rotate3d off; 
0086     %alpha(0.75);
0087     lighting gouraud; 
0088     hold off; 
0089 
0090 end
0091 
0092 
0093 end
0094