I need to create a matriz since two different?

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Tony Castillo
Tony Castillo 2016-10-10
评论： Steven Lord 2016-10-10
Hi i'm trying to build a matrix with the following data:
disp(C)
9.9176 3.4750
20.6735 936.0956
15.3217 592.1325
11.8539 128.6507
12.1579 430.5301
13.2333 267.0387
16.3886 762.0092
and the frecuency of every row
disp(V)
5191 1
575 1
455 1
849 1
665 1
618 1
407 1
But when i do the following,
a=[V; C];
disp(a)
5.1910 0.0010
0.5750 0.0010
0.4550 0.0010
0.8490 0.0010
0.6650 0.0010
0.6180 0.0010
0.4070 0.0010
0.0099 0.0035
0.0207 0.9361
0.0153 0.5921
0.0119 0.1287
0.0122 0.4305
0.0132 0.2670
0.0164 0.7620
This is wrong, because i expect a 3 by 7 matriz. What do i need to do?

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回答（3 个）

Massimo Zanetti
Massimo Zanetti 2016-10-10
Try
a=[V, C];
  1 个评论
Tony Castillo
Tony Castillo 2016-10-10
I still have wrong values
5.1930 0.0010 0.0099 0.0035
0.4520 0.0010 0.0156 0.6014
0.8550 0.0010 0.0119 0.1295
0.5700 0.0010 0.0207 0.9368
0.6720 0.0010 0.0121 0.4363
0.6300 0.0010 0.0133 0.2706
0.3880 0.0010 0.0164 0.7682

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Guillaume
Guillaume 2016-10-10
I assume you mean a 7 (rows) by 3 (columns) matrix, although I have no idea why just 3 and not 4 columns.
The semicolon ; concatenates vertically, so matlab has done exactly what you asked. If you want to concatenate horizontally, use a comma , or a space.
a = [V, C]; %or [V C], I recommend using a comma
I also recommend you go through the getting started tutorial
Marc Jakobi
Marc Jakobi 2016-10-10
I assume you want:
a = [V(:,1), C];
  4 个评论
显示 2更早的评论
Guillaume
Guillaume 2016-10-10
编辑：Guillaume 2016-10-10
or better change your displayed format, e.g:
format shortg
As I said in my answer, you really need to go through getting started tutorial. All of this is really really basic matlab.
Steven Lord
Steven Lord 2016-10-10
Or instead of using num2str, change the display format as described in the responses to this other Answer post from Tony.

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