Coordinate_Mosaic_Metrics_MAP.m

% Copyright (C) 2019 Robert F Cooper, created 2017-09-29
% 
%     This program is free software: you can redistribute it and/or modify
%     it under the terms of the GNU General Public License as published by
%     the Free Software Foundation, either version 3 of the License, or
%     (at your option) any later version.
% 
%     This program is distributed in the hope that it will be useful,
%     but WITHOUT ANY WARRANTY; without even the implied warranty of
%     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%     GNU General Public License for more details.
% 
%     You should have received a copy of the GNU General Public License
%     along with this program.  If not, see <http://www.gnu.org/licenses/>.
%
% Metricks - A MATLAB package for analyzing the cone photoreceptor mosaic.
%
% Coordinate_Mosiac_Metrics_MAP creates a map of an image/coordinate set
% across a set of image/coordinates.
% 
% To run this script, the script will prompt the user to select an folder containing
% image/coordinate pair.
% 
% **At present, images must be 8-bit grayscale tifs, coordinates must be formatted 
%   as a 2 column matrix (x,y), and must be named using the following convention,
%   where [imagename] can be any valid filename:**
% * Image File: [imagename].tif
% * Coordinate File: [imagename]\_coords.csv
% 
% It will then prompt the user to select what the output unit should be. At present,
% the options are:
% * Microns (using millimeters^2 for density)
% * Degrees
% * Arcminutes
% 
% Once the output unit is select, it will give the user the option to pick a 
% lookup table. The lookup table allows the software to analyze a folder of 
% images from different subjects/timepoints/conditions. The lookup table itself
% **must** be a 3 column 'csv' file, where the **first column** is a common 
% identifier for image/coordinate pairs, the **second column** is the axial 
% length (or '24' if the axial length is unknown) of the image/coordinate pairs,
% and the **third column** is the pixels per degree of the image/coordinate pairs.
% Each row must contain a different identifier/axial length/pixels per degree tuple.
% 
% An example common identifier could be a subject number, e.g, when working with the files:
% - 1235_dateoftheyear_OD_0004.tif
% - 1235_dateoftheyear_OD_0005.tif
% 
% Common identifiers could be "1235", "1235_dateoftheyear", "1235_dateoftheyear_OD".
% If all three were placed in a LUT, then the one that matches the most (as determined
% via levenshtein distance) will be used. In this example, we would use "1235_dateoftheyear_OD".
% 
% If we had another date, say: 1235_differentdateoftheyear_OD_0005.tif, then 
% _only_ the identifier "1235" would match between all images. However, say the
% two dates have different scales, then you would want to create two rows in the
% look up table for each date, with identifiers like: "1235_dateoftheyear" and
% "1235_differentdateoftheyear".
% 
% **If you do not wish to use a lookup table, then press "cancel", and the software
% will allow you put in your own scale in UNITS/pixel.**
% 
% **This software will automatically adjust its window size to encompass up 
% 100 coordinates.**
% 
% However, if you wish to specify a sliding window size, input the size 
% (in the units you are going to in to the brackets of the variable "WINDOW_SIZE"
% on line ~92 of Coordinate_Mosaic_Metrics_MAP.m.
% 
% **Window size inclusion is governed by the following rules:**
% 
% 1) If the tif is present and windowsize is not specified, the analysis will 
% be done on everything within the dimensions of the image.
% 2) If the tif is present and windowsize is specified, the assumed center of 
% the image is calculated according to the borders of the tif. **In either case,
% it doesn’t “care” how many (or even if there are any) cells in the image.**
% 3) If the tif is not present and windowsize is not specified, the analysis will
% be done on everything within the min and max coordinates in both x and y directions.
% So if you have an image in which there is an absence of cells on one side, 
% for example, you might end up with a clipped area that is not a square.
% 4) If the tif is not present and windowsize is specified, the assumed center 
% of the image is calculated according to the min and max coordinates in both 
% x and y directions. So if you have an image in which there is an absence of 
% cells on one side, the center will shift towards the other side of the image.
%
% This script creates a map of metrics from a selected folder.


clear;
close all force;

WINDOW_SIZE = [];
upper_bound = 150; %this is the number of BOUND cells to include
TRIM = true; % Set to true if you want to trim the outer cells until the number of cells is exactly the upper bound.

%% Crop the coordinates/image to this size in [scale], and calculate the area from it.
% If left empty, it uses the size of the image.


basePath = which('Coordinate_Mosaic_Metrics_MAP.m');

[basePath ] = fileparts(basePath);
path(path,fullfile(basePath,'lib')); % Add our support library to the path.

[basepath] = uigetdir(pwd);

[fnamelist, isadir ] = read_folder_contents(basepath,'csv');
[fnamelisttxt, isdirtxt ] = read_folder_contents(basepath,'txt');

fnamelist = [fnamelist; fnamelisttxt];
isadir = [isadir;isdirtxt];

liststr = {'microns (mm density)','degrees','arcmin'};
[selectedunit, oked] = listdlg('PromptString','Select output units:',...
                              'SelectionMode','single',...
                              'ListString',liststr);
if oked == 0
    error('Cancelled by user.');
end

selectedunit = liststr{selectedunit};                          

[scalingfname, scalingpath] = uigetfile(fullfile(basepath,'*.csv'),'Select scaling LUT, OR cancel if you want to input the scale directly.');

scaleinput = NaN;
if scalingfname == 0        
    
    while isnan(scaleinput)                
        
        scaleinput = inputdlg('Input the scale in UNITS/PIXEL:','Input the scale in UNITS/PIXEL:');
        
        scaleinput = str2double(scaleinput);
        
        if isempty(scaleinput)
            error('Cancelled by user.');
        end
    end
else
    [~, lutData] = load_scaling_file(fullfile(scalingpath,scalingfname));
end

%%
first = true;

proghand = waitbar(0,'Processing...');

for i=1:size(fnamelist,1)

    try
        if ~isadir{i}

            
            if length(fnamelist{i})>42
                waitbar(i/size(fnamelist,1), proghand, strrep(fnamelist{i}(1:42),'_','\_') );
            else
                waitbar(i/size(fnamelist,1), proghand, strrep(fnamelist{i},'_','\_') );
            end

            if isnan(scaleinput)
                % Calculate the scale for this identifier.                                
                LUTindex=find( cellfun(@(s) ~isempty(strfind(fnamelist{i},s )), lutData{1} ) );

                for x=1:size(LUTindex, 1)
                    if x == size(LUTindex, 1) % if it is the last/only item in the LUT - if only matches with the eye and not subID will have axial length as NAN (would happen if LUT doesn't have info needed for this dataset)
                        LUTindex = LUTindex(x);
                        break
                    end
                    val = LUTindex(x+1) - LUTindex(x); % checking if there are two eyes from the same subject in LUT
                    if val == 1
                        LUTindex = LUTindex(x);
                        break
                    end
                end
                
                axiallength = lutData{2}(LUTindex);
                pixelsperdegree = lutData{3}(LUTindex);

                micronsperdegree = (291*axiallength)/24;
                
                switch selectedunit
                    case 'microns (mm density)'
                        scaleval = 1 / (pixelsperdegree / micronsperdegree);
                    case 'degrees'
                        scaleval = 1/pixelsperdegree;
                    case 'arcmin'
                        scaleval = 60/pixelsperdegree;
                end
            else
                scaleval = scaleinput;
            end


            %Read in coordinates - assumes x,y
            coords=dlmread(fullfile(basepath,fnamelist{i}));
            
            % It should ONLY be a coordinate list, that means x,y, and
            % nothing else.
            if size(coords,2) ~= 2
                warning('Coordinate list contains more than 2 columns! Skipping...');
                continue;
            end

            if exist(fullfile(basepath, [fnamelist{i}(1:end-length('_coords.csv')) '.tif']), 'file')

                im = imread( fullfile(basepath, [fnamelist{i}(1:end-length('_coords.csv')) '.tif']));

                width = size(im,2);
                height = size(im,1);
                maxrowval = height;
                maxcolval = width;
            else
                warning(['No matching image file found for ' fnamelist{i}]);
                coords = coords-min(coords)+1;
                width  = ceil(max(coords(:,1)));
                height = ceil(max(coords(:,2)));
                maxrowval = max(coords(:,2));
                maxcolval = max(coords(:,1));
            end

            statistics = cell(size(coords,1),1);
            
            if ~isempty(WINDOW_SIZE)
                
                pixelwindowsize = repmat(WINDOW_SIZE/scaleval,size(coords,1),1);
                
            else
                                                
                if upper_bound > size(coords,1)
                    upper_bound = size(coords,1);
                end
                
                % Determine the window size dynamically for each coordinate
                pixelwindowsize = zeros(size(coords,1),1);
                numbound = zeros(size(coords,1),1);
                trimlist = cell(size(coords,1), 1);

                
                [V,C] = voronoin(coords,{'QJ'}); % Returns the vertices of the Voronoi edges in VX and VY so that plot(VX,VY,'-',X,Y,'.')
                tic;
                parfor c=1:size(coords,1)                                   
                    
                                        
                    % Stupid simple optimzation- first make big jumps 
                    
                    thiswindowsize=1;
                    while numbound(c) < upper_bound
                        thiswindowsize = thiswindowsize+10;
                        rowborders = ([coords(c,2)-(thiswindowsize/2) coords(c,2)+(thiswindowsize/2)]);
                        colborders = ([coords(c,1)-(thiswindowsize/2) coords(c,1)+(thiswindowsize/2)]);

                        rowborders(rowborders<1) =1;
                        colborders(colborders<1) =1;
                        rowborders(rowborders>maxrowval) =maxrowval;
                        colborders(colborders>maxcolval) =maxcolval;
                        
                        % Ensure we're working with bound cells only.
                        if size(coords,1) > 5
                             % Next, create voronoi diagrams from the cells we've clipped.                             
                             
                            bound = zeros(length(C),1);

                            fastbound = (V(:,1)<colborders(2) & V(:,1)>colborders(1) & V(:,2)<rowborders(2) & V(:,2)>rowborders(1));
                            
                            for vc=1:length(C)
                                bound(vc)=all(fastbound(C{vc}));
                            end                            

                            numbound(c) = sum(bound);
                        end
                    end
                    

                    % Then walk it back until we're below the bound
                    while numbound(c) > upper_bound
                        thiswindowsize = thiswindowsize-1;
                        rowborders = ([coords(c,2)-(thiswindowsize/2) coords(c,2)+(thiswindowsize/2)]);
                        colborders = ([coords(c,1)-(thiswindowsize/2) coords(c,1)+(thiswindowsize/2)]);

                        rowborders(rowborders<1) =1;
                        colborders(colborders<1) =1;
                        rowborders(rowborders>maxrowval) =maxrowval;
                        colborders(colborders>maxcolval) =maxcolval;
                        
                        % Ensure we're working with bound cells only.
                        if size(coords,1) > 5                        
                             
                            bound = zeros(length(C),1);

                            fastbound = (V(:,1)<colborders(2) & V(:,1)>colborders(1) & V(:,2)<rowborders(2) & V(:,2)>rowborders(1));
                            
                            for vc=1:length(C)
                                bound(vc)=all(fastbound(C{vc}));
                            end  
 
                            numbound(c) = sum(bound);
                        end
                    end    
                    
                    pixelwindowsize(c) = thiswindowsize;                 

                    if TRIM && numbound(c) ~= upper_bound
                        
                        % figure(1); clf;
                        % axis([colborders rowborders])
                        % hold on;
                        pixelwindowsize(c) = pixelwindowsize(c)+1;                 
                        rowborders = ([coords(c,2)-(pixelwindowsize(c)/2) coords(c,2)+(pixelwindowsize(c)/2)]);
                        colborders = ([coords(c,1)-(pixelwindowsize(c)/2) coords(c,1)+(pixelwindowsize(c)/2)]);

                        rowborders(rowborders<1) =1;
                        colborders(colborders<1) =1;
                        rowborders(rowborders>maxrowval) =maxrowval;
                        colborders(colborders>maxcolval) =maxcolval;

                        bound = zeros(length(C),1);
                        fastbound = (V(:,1)<colborders(2) & V(:,1)>colborders(1) & V(:,2)<rowborders(2) & V(:,2)>rowborders(1));
                        for vc=1:length(C)

                            bound(vc)=all(fastbound(C{vc}));

                            % if bound(vc)
%                                 patch(V(C{vc},1),V(C{vc},2),ones(size(V(C{vc},1))),'FaceColor','green');                                
%                              else
%                                  patch(V(C{vc},1),V(C{vc},2),ones(size(V(C{vc},1))),'FaceColor','blue');
                            % end
                        end

                        numbound(c) = sum(bound);
                        % title('OG')

                        stepback= pixelwindowsize(c)-1;
                        rowborders = ([coords(c,2)-(stepback /2) coords(c,2)+(stepback /2)]);
                        colborders = ([coords(c,1)-(stepback /2) coords(c,1)+(stepback /2)]);

                        rowborders(rowborders<1) =1;
                        colborders(colborders<1) =1;
                        rowborders(rowborders>maxrowval) =maxrowval;
                        colborders(colborders>maxcolval) =maxcolval;

                        % Next, create voronoi diagrams from the cells we've clipped.                                                                              
                         % figure(2); clf;
                         % axis([colborders rowborders])
                         % hold on;
                         
                        fastbound = (V(:,1)<colborders(2) & V(:,1)>colborders(1) & V(:,2)<rowborders(2) & V(:,2)>rowborders(1));
                        for vc=1:length(C)

                            bound(vc)=bound(vc)+all(fastbound(C{vc}));

                             % if bound(vc) == 2
                             %     patch(V(C{vc},1),V(C{vc},2),ones(size(V(C{vc},1))),'FaceColor','green');
                             % elseif bound(vc) == 1
                             %     patch(V(C{vc},1),V(C{vc},2),ones(size(V(C{vc},1))),'FaceColor','red');
                             % else
                             %     patch(V(C{vc},1),V(C{vc},2),ones(size(V(C{vc},1))),'FaceColor','blue');
                             % end
                         end
                        % axis([colborders rowborders])
                        % title('Overage')
                        
                        ignoreindx = find(bound == 1);
                        % Randomly choose which of the cells to keep from the last iteration to meet the upper bound defined above.
                        toremove = randperm(length(ignoreindx), numbound(c)-upper_bound); 
                        ignoreindx = ignoreindx(toremove);

%                         disp(['Need to remove ' num2str(numbound(c)-upper_bound) ' cells to match ' num2str(upper_bound) '.'])
                        % 
                        % rowborders = ([coords(c,2)-(pixelwindowsize(c) /2) coords(c,2)+(pixelwindowsize(c) /2)]);
                        % colborders = ([coords(c,1)-(pixelwindowsize(c) /2) coords(c,1)+(pixelwindowsize(c) /2)]);
                        % 
                        % rowborders(rowborders<1) =1;
                        % colborders(colborders<1) =1;
                        % rowborders(rowborders>maxrowval) =maxrowval;
                        % colborders(colborders>maxcolval) =maxcolval;
                        % bound = zeros(length(C),1);
                        % figure(3);clf;
                        %  axis([colborders rowborders])
                        %  hold on;
                        % 
                        %  for vc=1:length(C)
                        % 
                        %      vertices=V(C{vc},:);
                        % 
                        %      if (all(C{vc}~=1)  && all(vertices(:,1)<colborders(2)) && all(vertices(:,2)<rowborders(2)) ... % [xmin xmax ymin ymax] 
                        %                       && all(vertices(:,1)>colborders(1)) && all(vertices(:,2)>rowborders(1))) && all(vc ~= ignoreindx)
                        %          patch(V(C{vc},1),V(C{vc},2),ones(size(V(C{vc},1))),'FaceColor','green');
                        %      else
                        %          patch(V(C{vc},1),V(C{vc},2),ones(size(V(C{vc},1))),'FaceColor','blue');
                        %      end
                        %  end
                        %  drawnow;
                        % axis([colborders rowborders])
                        % title('Trimmed')
                        % pause;

                        trimlist{c} = ignoreindx;
                        numbound(c) = upper_bound;
                    end
                end
            end
            toc;
            disp('Determined window size.')
            
            %% Actually calculate the statistics
            comp_table = [];

            % Pre-fill the struct
            for c=1:size(coords,1)
                statistics{c} = struct('Number_Unbound_Cells', -1,'Number_Bound_Cells', 0, 'Total_Area', 0, 'Total_Bound_Area',0,...                      
                      'Bound_Density',0, 'Bound_NN_Distance',0,'Bound_IC_Distance',0,'Bound_Furthest_Distance',0,...
                      'Bound_Mean_Voronoi_Area', 0,'Bound_Percent_Six_Sided_Voronoi',0,'Unbound_DRP_Distance', 0,...
                      'Bound_Voronoi_Area_RI',0,'Bound_Voronoi_Sides_RI',0, 'Bound_NN_RI', 0, 'Bound_IC_RI', 0,...
                      'Unbound_Density', 0 ,'Unbound_NN_Distance', 0, 'Unbound_IC_Distance',0, 'Unbound_Furthest_Distance',0, 'Bound_Density_DEG',0);
            end


            tic;
            parfor c=1:size(coords,1)
                
                rowborders = ([coords(c,2)-(pixelwindowsize(c)/2) coords(c,2)+(pixelwindowsize(c)/2)]); 
                colborders = ([coords(c,1)-(pixelwindowsize(c)/2) coords(c,1)+(pixelwindowsize(c)/2)]);

                rowborders(rowborders<1) =1;
                colborders(colborders<1) =1;
                rowborders(rowborders>maxrowval) =maxrowval;
                colborders(colborders>maxcolval) =maxcolval;
                
                % [xmin xmax ymin ymax] 
                clip_start_end = [colborders rowborders];
                               

                statistics{c} = determine_mosaic_stats( coords, scaleval, scaleval_deg, selectedunit, clip_start_end , ...
                                                        trimlist{c}, 4 );
                
                statistics{c}.Window_Size = pixelwindowsize(c)*scaleval;


                if statistics{c}.Number_Bound_Cells ~= numbound(c)                    
                    warning(['Warning! Mismatch between how many bound cells we expected (' num2str(numbound(c)) ') and how many we had (' num2str(statistics{c}.Number_Bound_Cells) '!'])
                    pause;
                end

                warning off;
                [ success ] = mkdir(basepath,'Results');
                warning on;
            end
           toc;

           % Validate that we actually ran all cells by checking to make
           % sure the number of unbound cells isn't still -1.
           for c=1:size(coords,1)
                if statistics{c}.Number_Unbound_Cells == -1
                    warning('At least one cell failed to analyze!')
                end
           end
            
            %% Map output
            metriclist = fieldnames(statistics{1});
            [selectedmetric, oked] = listdlg('PromptString','Select map metric:',...
                                            'SelectionMode','single',...
                                            'ListString',metriclist);
              
            if oked == 0
                 error('Cancelled by user.');
            end

            interped_map=zeros([height width]);
            sum_map=zeros([height width]);
            thisval = zeros([size(coords,1) 1]);
            [Xq, Yq] = meshgrid(1:size(im,2), 1:size(im,1));


            for c=1:size(coords,1)
                thisval(c) = statistics{c}.(metriclist{selectedmetric});
            end
             
            scattah = scatteredInterpolant(coords(:,1), coords(:,2), thisval);
            interped_map = scattah(Xq,Yq);
			smoothed_interped_map = imgaussfilt(interped_map,20);
			
			interped_map(isnan(interped_map)) =0;
			smoothed_interped_map(isnan(smoothed_interped_map)) =0;
                
            dispfig=figure(1); 
            imagesc(interped_map); 
            axis image;
            colorbar; 
            [minval, minind] = min(interped_map(:));
            [maxval, maxind] = max(interped_map(:));
            
            [minrow,mincol]=ind2sub(size(interped_map),minind);
            [maxrow,maxcol]=ind2sub(size(interped_map),maxind);
            
            max_x_vals = maxcol;
            max_y_vals = maxrow;
            
            subjectID = lutData{1};% extract subject ID; added by Katie Litts in 2019
            disp([subjectID{LUTindex} ' Maximum value: ' num2str(round(maxval)) '(' num2str(maxcol) ',' num2str(maxrow) ')' ]) % display added by Katie Litts in 2019
                       
            title(['Minimum value: ' num2str(minval) '(' num2str(mincol) ',' num2str(minrow) ') Maximum value: ' num2str(maxval) '(' num2str(maxcol) ',' num2str(maxrow) ')'])
            
            result_fname = [fnamelist{i}(1:end-4) '_bound_map_' date '_' num2str(WINDOW_SIZE) metriclist{selectedmetric}];
            
            saveas(gcf,fullfile(basepath,'Results', [result_fname '_fig.png']));
			saveas(gcf,fullfile(basepath,'Results', [result_fname '_fig.svg']));
   
            scaled_map = interped_map-min(clims);
            scaled_map(scaled_map <0) =0; %in case there are min values below this
            scaled_map = uint8(255*scaled_map./(max(clims)-min(clims)));
            scaled_map(scaled_map  >255) = 255; %in case there are values above this
            imwrite(scaled_map, vmap, fullfile(basepath,'Results',[result_fname '_raw.tif']));
            
            %save matrix as matfile
            save(fullfile(basepath,'Results',[subjectID{LUTindex} '_bounddensity_matrix_MATFILE_' date '.mat']), "interped_map");
    
        end
    catch ex
        warning(['Unable to analyze ' fnamelist{i} ':']);
        warning([ex.message ', In file: ' ex.stack(1).file '  Line: ' num2str(ex.stack(1).line)]);
    end
end
close(proghand);