Can someone explain me about this line of code. Please help

[amadord]

I have this code inside the photovore program in arduino. I want to learn what it means.

here's the code:
sensor_right = map(sensor_right, 0, 1023, 0, 255);

what does the numbers mean?

[dellagd]

um, a little more info plz. Can u plz post the code here?

[waltr]

Can you look or post the code for the function map()? That is where the answer may be.

[Razor Concepts]

That is a fancy way of converting a number that is originally from 0 to 1024 (typically ADC reading) to a 0 to 255 value. I believe it is Arduino code.

[billhowl]

map(value, fromLow, fromHigh, toLow, toHigh)
Description

Re-maps a number from one range to another. That is, a value of fromLow would get mapped to toLow, a value of fromHigh to toHigh, values in-between to values in-between, etc.

http://www.arduino.cc/en/Reference/Map

[Xyver]

I believe Razor is correct.  Its converting the values from 0-1023 to 0-255.  I assume its for a photovore?

[amadord]

okay thanks that explains. thank you very much