Ignore comments in a csv file

I have a .csv file that reads as the following:

# nodes.csv file for V-REP kilobot motion planning scene.

# All lines beginning with a # are treated as a comment and ignored.

# Each line below has the form

# ID x y heuristic-cost-to-go

# where ID is the unique integer ID number of the node (1 through N)

# (x y) is the location of the node in the plane and heuristic-cost-to-go

# is an optimistic estimate of the path length from that node to the

# goal node as needed by A* search.

1 -0.5 -0.5 1.4142

2 -0.09 -0.4 1.0762

3 -0.285 -0.305 1.1244

4 0.0575 -0.225 0.8494

5 -0.0525 -0.0175 0.7604

6 -0.37 0.3 0.8927

7 0.3525 -0.0525 0.5719

8 0.0625 0.255 0.5014

9 -0.1 0.3725 0.6134

10 0.4275 0.195 0.3135

11 0.345 0.3525 0.214

12 0.5 0.5 0

The file formatting is not fixed per se and can have multiple lines of comments/nodes when necessary. I realise the csvread() function does not ignore the comments. Can someone suggest a suitable snippet to ignore comments and extract numbers from the .csv file? I am fairly new to programming with Matlab and would appreaciate any help.

[Walter Roberson]

textscan with CommentStyle option

[dpb]

readtable and readmatrix also support 'CommentStyle' and are hgher-level than textscan

Answer 1

[Govind KP]

You can use readmatrix function as follows:

>> nodes = readmatrix('nodes.csv', 'CommentStyle','#')

[Aditya Mehrotra]

Thanks a lot! This works perfectly.