help on graph (w/o common matrix plotting built-in functions)
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Dear all,
based on a matrix of zeros and ones, let's say 10 x 365 (10 years a 365 days), I would like to plot a '-' for a one and leave the position blank ' ' for a zero.
Thus, the graph should e.g. look like:
....
------ --- --- ---- ---- ------ ----- --
-------- ------ --------------- -----------
------ -- ---------- --------- ---------
----- --------------- ------ ---------- -
.....
Any hint appreciated.
Respuesta aceptada
In that case, maybe something like this will get you close.
A = randi(2,10,365)-1;
x = 1:size(A,2);
y = size(A,1):-1:1;
for i = 1:size(A,1)
A(i,:) = A(i,:)*y(i);
end
A(A==0) = NaN;
for i = 1:size(A,1)
line(x, A(i,:), 'Marker', '_', 'linestyle', 'none', 'MarkerSize', 0.1)
end
Más respuestas (5)
A = randi(2,10,365)-1
str = repmat(' ', size(A));
str(A==1) = '-';
disp(str)
3 comentarios
A = randi([0 1], 5, 5)
B = ' -';
B(A+1)
Les Beckham
el 20 de Mayo de 2022
How clever! I'm suprised that that works. I would have never thought to index into a 1x2 array with a larger index array.
Steven Lord
el 21 de Mayo de 2022
The size of the index array doesn't matter for linear indexing. What matters are the values in that array.
Patrick Laux
el 20 de Mayo de 2022
0 votos
1 comentario
A = randi([0 1], 5, 5)
spy(A)
If you really want dashes:
figure
spy(A, '_')
In the spirit of ridiculousness, here is my attempt:
% random binary data
data = randi([0 1],10,10)
data =
1 1 0 0 1 1 1 1 0 0
0 0 0 1 0 1 1 1 1 1
0 0 0 1 1 0 0 0 1 0
1 1 1 1 0 1 0 0 1 0
0 1 0 1 0 1 1 0 1 1
0 1 0 1 0 0 1 1 1 0
0 0 1 0 1 0 1 0 0 0
0 0 0 0 0 1 1 0 0 1
1 0 0 0 1 1 0 1 0 1
0 1 1 0 0 1 0 1 0 1
% convert to char data (space and full-width crossbar)
charmap = char([32 196]);
chardata = charmap(data+1)
chardata =
10×10 char array
'ÄÄ ÄÄÄÄ '
' Ä ÄÄÄÄÄ'
' ÄÄ Ä '
'ÄÄÄÄ Ä Ä '
' Ä Ä ÄÄ ÄÄ'
' Ä Ä ÄÄÄ '
' Ä Ä Ä '
' ÄÄ Ä'
'Ä ÄÄ Ä Ä'
' ÄÄ Ä Ä Ä'
% construct an image by flowing char glyphs into a rectangular box
charsize = [8 8]; % depends on the selected font
datasize = size(chardata);
tsize = [NaN datasize(2)*charsize(2)+charsize(2)/2];
outpict = textblock(chardata(:)',tsize,'font','compaq-8x8','tightwidth',true,'hardbreak',true);
% display the image with character-centered tickmarks
xrange = 0.5:datasize(1)+0.5;
yrange = 0.5:datasize(2)+0.5;
imagesc(xrange,yrange,1-outpict)
colormap(gray)
Alternatively, instead of using a full crossbar, you can just use
charmap = ' -';
and get
Bear in mind those are different random data. The point is that the bars don't touch.
Patrick Laux
el 21 de Mayo de 2022
0 votos
data = randi([0 1],10,30)
imshow(1-data)
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