zvect command from DSP toolbox error fix

Hello,

I am a student using the 2024a version of Matlab with the DSP toolkit.

I have been trying to figure out why when using the zvect command, i recieve this error

Input:

w=[-1+6*j,j]

zvect(w)

Output:

Error using plot

Invalid color, marker, or line style.

Error in zvect (line 80)

h = plot(real([zFrom;zTo]), imag([zFrom;zTo]), linetype,...

Error in LAB2 (line 10)

zvect(w)

Weird, right? So I'm looking into the file zvect.m and notice that the version check is the main culprit because of these lines (starting at line 27)

vv = version;

if( vv(1)>='5')

linetype = 'b-';

else

linetype = 'w:-'; %<--- WHITE is NOT good in v5

end

From this code, it pulls the version number of my 2024a as '2' which is less than '5', so it sets the linetype to 'w:-' which is incompatible with 2024a.

I ran Matlab as admin and typed in 'edit zvect.m' in the console,

Then editing the if line to

if( str2num(vv(1:2))>=5)

Fixes the error and now I can use the command without issue on my laptop.

I just thought I would post here in the hopes of getting this fixed by the devs.

I know from my class, there were several students having this issue(we were probably on different versions 2023,2024..etc), this ultimately forced to use an older version of matlab that was installed on the school's computer. Sorry if this is the wrong board to post this in.

[Glenn]

Sry this is actually the wrong avenue to get this fixed.

The zvect command comes from the spfirst toolbox supplied by gatech.edu, in conjuction with the dsp first 2e book. I will need to contact them some how.

[Umar]

Hi @Glenn,

Please click the link below

https://www.matlab.gatech.edu/

& Visit Section “For More Information”, it should help.

Hope this helps.

[Glenn]

! Thanks!

Answer 1

[Umar]

Hi @Glenn,

Please refer to this documentation by clicking the link below and let me know if this helps resolve your problem.

https://www.mathworks.com/matlabcentral/answers/27898-dsp-first-toolbox-for-matlab

[Glenn]

It is the same issue, yes, but it doesn't solve the problem because it sets the line on the graph to the color white, which can't be seen because the graph background is white. I actually already fixed the problem, if you read what I wrote above, I was just hoping to get in contact with the propper people to get the zvect.m command fixed so we can all stop stumbling upon this error. Thanks though.

[Umar]

Hi @Glenn,

I reviewed your edited comments. Hopefully, by clicking the link below will help get this issue resolved.

https://supportcases.mathworks.com/mwsupport/s/casecreation?language=en_US&c__caseParameter=Report_a_Bug&s_tid=srl22_br