"Unable to perform assignment because the size of the left side is 1-by-3 and the size of the right side is 6-by-1." - I need help

get the error at the bolded line

  if makegraphs
        figure('NumberTitle', 'off', 'Name', 'Sessions with Cues and Transients','units','normalized','outerposition',[0 0 1 1]); clf; hold on
        stepup = 0;
        for abc = animalnumber
            stepup = -5*abc;
            plot(data(abc).time,data(abc).sigfilt+stepup,'Color',[0 0.6 0])
            plot(data(abc).locs./fsg1,data(abc).pks+stepup,'o','Color',[0.6 0 0],'LineWidth',2)
            if isfield(data,'pluscue')
                for xyz = 1:numel(data(abc).pluscue)
                    line([data(abc).cuemark(xyz) data(abc).cuemark(xyz)],[-.5+stepup .5+stepup],'Color',[1 0 0],'LineWidth',2);
                end
            end
            text(max(data(abc).time),stepup,[data(abc).animal,'-',data(abc).conditions,' (' num2str(numel(data(abc).pks)/data(abc).tg(end)*60), ' trans/min)'])
        end
    end

if isfield(data,'structlocs')
    for abc = animalnumber
        uniquevectorprep{abc} = [data(abc).conditions];
    end
    C = cellstr(unique(uniquevectorprep));
    C = C';Dopamine
    
else
    for abc = animalnumber
        uniquevectorprep{abc} = [data(abc).conditions];
    end
    C = cellstr(unique(uniquevectorprep));
    C = C';

    for abc = 1:size(C,1)
        for xyz = animalnumber
            if strcmp(data(xyz).conditions,C{abc})==1
                structlocs(xyz,abc) = 1;
            end
        end
        data(abc).condcomb = C{abc};
        data(abc).structlocs = find(structlocs(:,abc)==1);
    end
end
if quant1
    figure('NumberTitle', 'off', 'Name', 'Transients Per Minute'); clf; hold on;
    for abc = animalnumber
        data(abc).transpmin = numel(data(abc).pks)/data(abc).tg(end)*60;
    end
    for abc = 1:size(C,1)
        data(abc).meantranspmin = nanmean([data(data(abc).structlocs).transpmin]);
        data(abc).SEMtranspmin = nanstd([data(data(abc).structlocs).transpmin],0,2)./(sqrt(numel([data(data(abc).structlocs).transpmin])));
    end
    animalcolor = distinguishable_colors(length(C));
    plt= bar(categorical(C),[data.meantranspmin],'FaceColor','flat','LineWidth',2);
    xslot = get(plt,'XData');
    for abc = 1:size(C,1)
        pltpt = plot(xslot(abc),[data(data(abc).structlocs).transpmin],'.','Color','k','MarkerSize',14);
        freqD(:,abc) = [data(data(abc).structlocs).transpmin];
        plt.CData(abc,:) = figcol(:,abc);
    end
    errorbar(1:size(C,1),[data.meantranspmin],[data.SEMtranspmin],'.','Color','k','LineWidth',2)
    ylabel('Transients per Minute')
    title('Transient Frequency')
    xcoord = get(gca,'xLim'); xcoord = xcoord(1);
    ycoord = get(gca,'yLim'); ycoord = ycoord(2)-(diff(ycoord)/15);
    text(xcoord,ycoord,{['n = ', num2str(size(uani,2))]}, 'HorizontalAlignment', 'center')
    if print1
        set(gcf,'renderer','Painters')
        print('transFreq','-depsc')
    end
    
    
    figure('NumberTitle', 'off', 'Name', 'Peak Amplitude'); clf; hold on;
    for abc = animalnumber
        data(abc).mpks = mean(data(abc).pks);
    end
    for abc = 1:size(C,1)
        data(abc).meanpks = nanmean([data(data(abc).structlocs).mpks]);
        data(abc).SEMpks = nanstd([data(data(abc).structlocs).mpks],0,2)./(sqrt(numel([data(data(abc).structlocs).mpks])));
    end
    animalcolor = distinguishable_colors(length(C));
    plt= bar(categorical(C),[data.meanpks],'FaceColor','flat','LineWidth',2);
    xslot = get(plt,'XData');
    for abc = 1:size(C,1)
        pltpt = plot(xslot(abc),[data(data(abc).structlocs).mpks],'.','Color','k','MarkerSize',14);
        ampD(:,abc) = [data(data(abc).structlocs).mpks];
        plt.CData(abc,:) = figcol(:,abc);
    end
    errorbar(1:size(C,1),[data.meanpks],[data.SEMpks],'.','Color','k','LineWidth',2)
    ylabel('dF/F')
    title('Peak Amplitude')
    xcoord = get(gca,'xLim'); xcoord = xcoord(1);
    ycoord = get(gca,'yLim'); ycoord = ycoord(2)-(diff(ycoord)/15);
    text(xcoord,ycoord,{['n = ', num2str(size(uani,2))]}, 'HorizontalAlignment', 'center')
    if print1
        set(gcf,'renderer','Painters')
        print('transAmp','-depsc')
    end
else
    freqD = 0;
    ampD = 0;
end

and then another one here (bolded)

if strcmp(transThreshType,'session')
    [data,uani,ucond,freqD,ampD] = countTransients(data,numstd,animalnumber,0,expdsn,fsg1,quant1,print1,figcol,makegraphs);
    [data] = normMethod(data,animalnumber,salvec,expdsn,normMethodType);
elseif strcmp(transThreshType,'vehicle')
    [data,uani,ucond,~,~] = countTransients(data,numstd,animalnumber,salvec,expdsn,fsg1,quant1,print1,figcol,makegraphs);
    [data] = normMethod(data,animalnumber,salvec,expdsn,normMethodType);
end