kurisa.m

data = read_mixed_csv('tube19.csv', ',');
dt = datenum(strcat(data(:,1), {' '}, data(:,2)), 'dd.mm.yyyy HH:MM');
M = [dt str2double(data(:,3))];
plot(M(:,1), M(:,2))

NumTicks = 10;
L = get(gca,'XLim');
set(gca,'XTick',linspace(L(1),L(2),NumTicks))
datetick('x',19,'keeplimits', 'keepticks')
%  use this:  minX = datenum(2009, 12, 31) for scale
%axis([min(M(:,1)) max(M(:,1)) min(M(:,2))*1.1 max(M(:,2))*1.2])
grid

read_mixed_csv.m

function lineArray = read_mixed_csv(fileName,delimiter)
  fid = fopen(fileName,'r');   %# Open the file
  lineArray = cell(100,1);     %# Preallocate a cell array (ideally slightly
                               %#   larger than is needed)
  lineIndex = 1;               %# Index of cell to place the next line in
  nextLine = fgetl(fid);       %# Read the first line from the file
  while ~isequal(nextLine,-1)         %# Loop while not at the end of the file
    lineArray{lineIndex} = nextLine;  %# Add the line to the cell array
    lineIndex = lineIndex+1;          %# Increment the line index
    nextLine = fgetl(fid);            %# Read the next line from the file
  end
  fclose(fid);                 %# Close the file
  lineArray = lineArray(1:lineIndex-1);  %# Remove empty cells, if needed
  for iLine = 1:lineIndex-1              %# Loop over lines
    lineData = textscan(lineArray{iLine},'%s',...  %# Read strings
                        'Delimiter',delimiter);
    lineData = lineData{1};              %# Remove cell encapsulation
    if strcmp(lineArray{iLine}(end),delimiter)  %# Account for when the line
      lineData{end+1} = '';                     %#   ends with a delimiter
    end
    lineArray(iLine,1:numel(lineData)) = lineData;  %# Overwrite line data
  end
end