setting the limits for negative values for colormap

I am trying to set the limits for color in the image plot type by using this code

for g = 1:size(C,1)
    subplot(6,1,g+4);
    image(1 - C{g,1}), hold on
    plot(O{g,1}(:),'.c','MarkerSize',16), hold on
    if g < 2
        title(sprintf('Outcomes and preferences - %s',MDP(1).label.modality{g}));
    else
        title(MDP(1).label.modality{g});
    end
    if g==size(C,1)
       xlabel('trial');
    end
    xlim([1,size(MDP(1).C{g},2)*Nt]);
    g_y=[0.5:1:size(MDP(1).C{g},1)+0.5]; % user defined grid Y [start:spaces:end]
    g_x=[0.5:size(MDP(1).C{g},2):size(MDP(1).C{g},2)*Nt+0.5]; % user defined grid X [start:spaces:end]
    for i=1:length(g_x)
        plot([g_x(i) g_x(i)],[g_y(1) g_y(end)],'b:','LineWidth',1.5) %y grid lines
        hold on    
    end
    for i=1:length(g_y)
        plot([g_x(1) g_x(end)],[g_y(i) g_y(i)],'m:','LineWidth',0.75) %x grid lines
        hold on    
    end
    hold off
    set(gca, 'XTick', (1 : size(MDP(1).C{g},2) : size(MDP(1).C{g},2)*Nt) );
 
    set(gca,'XTickLabel',(1 : 1 : Nt));
    set(gca,'YTick',1:numel(MDP(1).label.outcome{g}));
    set(gca,'YTickLabel',MDP(1).label.outcome{g});
    ax = gca;
    ax.CLim = [min(C{g,1}(:,1)) max(C{g,1}(:,1))];
end

I got this error message

Error setting property 'CLim' of class 'Axes':
Value must be a 1x2 vector of numeric type in which the second element is larger than the first and may be Inf

The values of C{g,1} are negative and it caused that my figure gets dark so I wanted to define in advance the range of colormap but this error occured. Any suggestion?

Answer 1

[VBBV]

%if true
  ax = gca;
  ax.CLim = [abs(min(C{g,1}(:,1))) abs(max(C{g,1}(:,1)))];

Use abs for positive values

Answer 2

[Image Analyst]

What are the values when it crashes:

minValue = min(C{g,1}(:,1)) 
maxValue = max(C{g,1}(:,1))
fprintf('Min = %f, max = %f.\n', minValue, maxValue);
% Apply min and max of our data.  Min value at color #1, and max value will take on the color at the top of the colorbar.
colorbar;
caxis([minValue, maxValue]);

I'm guessing that maybe they're both the same value.