Can JSL do a base64 conversion?

[#1]

Hi, is JSL capable of doing a base64 conversion of an image file?  (i.e. read in an image file like a .PNG and output its equivalent base64 text)

thanks, DJ

[#2]

In JMP, select Help > JMP Help. Then search for Base64. Pops right up!

[#3]

Oddly enough, my JMP (12.2.0) Help menu doesn't show any references to Base64.  (search seems to be indexed too)  Are there references to it perhaps in a later version of JMP?  DJ

[#4]

I used the current JMP 14.0 version. I confirmed that it is not provided by JMP 12.2.

[#5]

I apologize for mis-reading your request. The Base64 conversion capability comes with the Load Text File() function. You can specify a BLOB option with a Base64Compressed toggle (on|off). I cannot find anything about saving such a format.

You might be able to use the JMP integration with R, Python, or MATLAB if they support this conversion.

[#6]

thanks Mark!

Dumb question on my part:  I suppose blob to char() can't somehow do this?  For example:
x=blob to char("c:\myfolder\myfile.PNG","base64compressed");  and then the magic, somehow be able to save x as this format.

I'm only asking this from reading John Ponte's interesting blog where he appeared to use char to blob() to read in a PNG as a base64 format:  (so my question is like the inverse of this of course)

https://community.jmp.com/t5/JMP-Blog/Embedding-images-in-JSL-scripts/ba-p/30080

Then I see that JSL has a encode64 double() command, but perhaps this isn't enough here to do an image file conversion.

thanks, DJ

[#7]

When you read in an image in JSL it will show the image in the log as the base64 compressed text string. Try doing this to see the base64 representation:

img = newImage("$SAMPLE_IMAGES/windmap.png");
show(img);

Ironically, I don't see a way to save that string other than cut & paste it from the log. 

Hope this helps,

John Ponte

[#8]

Thanks All.  I eventually found a Python script to convert image files to base64.  Here's a snippet if it helps someone in the future, works quite well and very simplistic:
Python code:

import base64
with open('C:/temp/myimage.png', 'rb') as x1, open('C:/temp/myimagebase64.txt', 'w') as x2:
    base64.encode(x1, x2)

[#9]

if you can do the base64 there, couldn't you just do 

Names default to here(1);
txt = log capture(
	img = newImage("$SAMPLE_IMAGES/windmap.png");
	print(img);
);
raw_string = Arg(Arg(parse(txt), 1), 1);

[#10]

If you found this, you are looking for the Encode64Blob or Decode64Blob functions, see the scripting index.