split the name of a file (image .png)

I would like to change the name of this image:

'name_of_figure_BN_102.png'

to this name:

'name_of_figure_NB_102.png'

I tried splitting the name with 'strsplit' but it doesn't apply to my picture name because there is this '_' symbol.

Is there a simple method to change the name?

[Vilém Frynta]

Is this just one-time thing or do you wish to automate this process? Are you renaming hundreds of files or just one?

[Alberto Acri]

just one-time thing

[Image Analyst]

OK, fine, but did you see the Answers below?

Answer 1

[Vilém Frynta]

My way to do so would be as follows:

str1 = "name_of_figure_BN_102.png"; % Your input image name
strPieces = strsplit(str1,"_")      % Splitting the name into pieces

strPieces = 1×5 string array
    "name"    "of"    "figure"    "BN"    "102.png"

strPieces(4) = "NB"                 % Editing "BN" to "NB"

strPieces = 1×5 string array
    "name"    "of"    "figure"    "NB"    "102.png"

% Reconstructing the name again 
str2 = strcat(strPieces(1),"_", strPieces(2),"_", strPieces(3),"_", strPieces(4),"_", strPieces(5))

str2 = "name_of_figure_NB_102.png"

I am certain that there is a better way of reconstructing str2 and also there is a way to detect BN's position (and automatize this process). I only had few minutes to make this up. Hope it helps.

Answer 2

[Image Analyst]

Here is one way:

fileName = 'name_of_figure_BN_102.png';
underlineLocations = strfind(fileName, '_')

underlineLocations = 1×4

5 8 15 18

index1 = underlineLocations(end-1) + 1;
index2 = underlineLocations(end) - 1;
fileName(index1 : index2) = fliplr(fileName(index1 : index2))

fileName = 'name_of_figure_NB_102.png'