help using sortrows please

Hello,

I can't seem to achieve my desired result of sorting the rows of a matrix into ascending order. The documentation seems to imply that given:

A =

 109.8896  102.4908  113.1280  102.8650  114.9918  112.3057

100.3598  110.5698  117.1109  118.4460  105.3406  105.4840
112.6144  106.1511  111.6523   95.3905  117.2843  112.1545
110.3889  114.4477  113.2061  106.8088  101.0697  109.9096

Applying

B = sortrows(A)

would leave the columns in their original positions while placing the row entries into ascending order. However the results I am getting (the numbers are different as the matrix is actually much larger) is like:

 95.9296  106.7975  107.7761  107.4120  107.8763  120.1204
   97.9841  111.7957  109.5949  112.5619  111.7358  114.5569
   98.2657  119.9416  113.8693  104.8464  111.4648  101.0478
   98.7183  115.0606  109.6277   99.3238  109.5562  112.9906
   98.8091  100.8632  105.0307  109.2623  105.0774  107.9541

As you can see the rows elements do not ascend as I wanted.

Could someone tell me what I am doing wrong?

Kind regards,

Tom

[Azzi Abdelmalek]

To explain your problem, you don't need to post all your data, just post a short example, and show the expected result

Answer 1

[Azzi Abdelmalek]

Maybe you want

a=[2 3 1;4 0 8; 7 3 9]
sort(a,2)

[Tom]

Thankyou!

Answer 2

[Wayne King]

Hi Tom,

sortrows(A) sorts the rows of the matrix A based on the entries in column 1.

so:

A = [100.3598  110.5698  117.1109  118.4460  105.3406  105.4840
  109.8896  102.4908  113.1280  102.8650  114.9918  112.3057
  110.3889  114.4477  113.2061  106.8088  101.0697  109.9096
  112.6144  106.1511  111.6523   95.3905  117.2843  112.1545];

sortrows(A)

is equivalent to:

sortrows(A,1)

So you see in your extract above the matrix is sorted by the elements in the first column.

If you want to sort based on other columns you can put those columns in as a positive integer to sort in ascending order, or a negative integer to sort in descending order

sortrows(A,-2)