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- Betreff: How to calculate a log base 10 equation

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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/td-p/10945615
Feb 25, 2020
Feb 25, 2020

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Math.log( ) just givesme the natural log. I've tried Math.log(10, ( ) ), Math.log10( ), console.log(getBaseLog(10, ( ) ), console.log(Math.log10( )). Now I'm at a loss on how to go about solving this.

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Acrobat SDK and JavaScript

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Feb 25, 2020
Feb 25, 2020

However, you can easily write a function that returns the log10 value using the log method, like this:

function log10(val) {

return Math.log(val) / Math.LN10;

}

And then you can call it like this, for example:

log10(2)

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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10945626#M7522
Feb 25, 2020
Feb 25, 2020

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What is console.log?

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christopherj66219798
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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10945805#M7523
Feb 25, 2020
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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10945865#M7525
Feb 25, 2020
Feb 25, 2020

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In Acrobat use:

console.show();

console.println( ... );

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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10945837#M7524
Feb 25, 2020
Feb 25, 2020

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https://sciencing.com/convert-ln-log-10-8359505.html

Also, read the Acrobat JavaScript API, you need to know the methods specific to Acrobat.

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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10945870#M7526
Feb 25, 2020
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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10945876#M7527
Feb 25, 2020
Feb 25, 2020

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However, you can easily write a function that returns the log10 value using the log method, like this:

function log10(val) {

return Math.log(val) / Math.LN10;

}

And then you can call it like this, for example:

log10(2)

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christopherj66219798
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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10945999#M7528
Feb 25, 2020
Feb 25, 2020

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Thank you. Was stuck on how to write it out for Acrobat for a while.

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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10946012#M7529
Feb 25, 2020
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There's nothing Acrobat-specific in the code above. It's generic JS code.

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christopherj66219798
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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10946025#M7530
Feb 25, 2020
Feb 25, 2020

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Oh maybe I was just thinking of the wrong thing. I was trying:

function getBaseLog(x,y) {

return Math.log(y) / Math.log(x);

}

console.log(getBaseLog(2,8));

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/t5/acrobat-sdk-discussions/how-to-calculate-a-log-base-10-equation/m-p/10946058#M7531
Feb 25, 2020
Feb 25, 2020

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