Adding parameter to file name string when saving a figure using savefig or figsave

I am trying to save a figuer using figsave or savefig, with both string parameter and string. But nothing works.

CHANNEL=1;
dt = datestr(now,'yymmdd_HHMMSS');
filename = sprintf("C15_rhs_CalADC_ch%i_%s",CHANNEL,dt);
figsave(gcf,filename,'ac');
saveas(gcf,filename,'ac');

I need line 4 or line 5 to work to save the figuer as : C15_rhs_CalADC_ch6_220919_121449_ac

Answer 1

[Star Strider]

I am not certain what you want.

Perhaps —

CHANNEL=1;
dt = datestr(now,'yymmdd_HHMMSS');
filename = sprintf("C15_rhs_CalADC_ch%i_%s_",CHANNEL,dt) + "ac"

filename = "C15_rhs_CalADC_ch1_220919_140304_ac"

.

[Bakr Abdelgaliel]

Thanks alot for that hint. I needed the + "ac".

So the code will be:

CHANNEL = 1;
dt = datestr(now,'yymmdd_HHMM');
filename = sprintf("C15_rhs_CalADC_ch%i_%s",CHANNEL,dt);
saveas(gcf,filename + "_ac",'fig');

[Star Strider]

My pleasure!

If it solved your problem, I can move it to an Answer. (I thought about posting it as an Answer, however I was not certain what the problem was.)

[Bakr Abdelgaliel]

Of course, please do it.

[Star Strider]

@Bakr Abdelgaliel — As always, my pleasure!

@Rik — Thank you!

Answer 2

[Chunru]

CHANNEL=1;
dt = datestr(now,'yymmdd_HHMMSS');
% filename = sprintf("C15_rhs_CalADC_ch%i_%s_ac",CHANNEL,dt);  % with ac
% plot(randn(6,1))
% %figsave(gcf,filename,'png');       % figsave is a customized function?
% saveas(gcf,filename,'png')   % use file type matlab recognizes
filename = sprintf("C15_rhs_CalADC_ch%i_%s",CHANNEL,dt);  % with ac
plot(randn(6,1))
%figsave(gcf,filename,'png');       % figsave is a customized function?
saveas(gcf,filename+"_ac",'png')   % use file type matlab recognizes

ls   % the file is saved

C15_rhs_CalADC_ch1_220920_070606_ac.png

[Bakr Abdelgaliel]

I would like to add another text ('ac') before .png

[Chunru]

See the update.

[Bakr Abdelgaliel]

Thanks for your help, but i don't like to change the parameter (filename) because i am going to use it several times with 'ac', 'dc', 'ADC', 'DAC', etc.. so i would like to add 'ac' without editing the 'filename'

[Rik]

Presumably 'ac', 'dc', etc are stored in a variable. Why don't you put the variable name in there?

SomeVariable='ac';
filename = sprintf("C15_rhs_CalADC_ch%i_%s_%s",CHANNEL,dt,SomeVariable);

[Bakr Abdelgaliel]

Thanks for your help

Answer 3

[Karim]

Do you mean savefig? See below fo a method to create the filename as you indicate and a demo to save and open the figure.

CHANNEL = 1;
dt = datestr(now,'yymmdd_HHMMSS');

% concatenate the different strings, use _ as delimiter
filename = join( ["C15_rhs_CalADC_ch",num2str(CHANNEL),dt,"ac"] , "_" )

filename = "C15_rhs_CalADC_ch_1_220919_140322_ac"

figure
plot(rand(20,1))
axis equal
grid on

% save the figure 
savefig(gcf, filename)

% try to open the figure
openfig(filename)

ans = 
  Figure (2) with properties:

      Number: 2
        Name: ''
       Color: [1 1 1]
    Position: [671 661 577 433]
       Units: 'pixels'

  Show all properties

[Bakr Abdelgaliel]

I know that, but i don't like to change the parameter (filename) because i am going to use it several times with 'ac', 'dc', 'ADC', 'DAC', etc..