Using container map to get values and to draw histogram

M =

Map with properties:

Count: 100

KeyType: char

ValueType: double

mean(valueSet)

ans =

1.3911e+07

I have the above container map. Howdo I get values of

+ Histogram

+ Most common letter of first name

+ Average number of letters in first name (integer)

[Ntombikayise Bhengu]

I did the histogram using the followig code:

bar(valueSet)

got this drawing:

Answer 1

[Puru Kathuria]

Hi,

I understand that you are storing your data in containers.Map and want to plot it as a bar graph.

Below is the code snippet that explains how to plot bar graphs on Maps and also shows how to query the most occuring key in the data.

I hope you can relate the below demonstration to your requirements

%Plotting bar graph
keysData = {'a', 'b', 'c', 'e', 'g'}; valuesData = [1,3,4,5,8];
map = containers.Map(keysData,valuesData);
bar(cell2mat(map.values));
k = keys(map);
set(gca, 'XTick', 1:length(k));
set(gca, 'XTickLabel', k);

%Finding most occuring character 
keySet = cell2mat(map.keys);
maxFrequency = 0; 
maxKey = '';
for i = 1:numel(keySet)
    iThValue = map(keySet(i));
    if iThValue >= maxFrequency
        maxFrequency = iThValue;
        maxKey = keySet(i);
    end
end

maxKey
maxFrequency