merging elements of array

[Siddhant]

Hi,

I am new to programming.

I have a sensor that sends a data stream through a serial port. I have collect all that data in a 1D unsigned byte array. Now, lets say my 1-D array is [12][45][65][12]...... where each "[ ]"  is a element of the array. Now to make sense of this data what i need to do is merge two elements the array and multipy it by 2/(2^15). i.e. My converted data should by [1245]*2/(2^15). Basically 2 bytes together makes sense. I can do a simple add of each element. Also the other problem is,data from the sensor is a stored as the 1-D array  of unsigned byte. However, the converted data is supposed to be signed 16-bit integer.

Please give any suggestions on how to go about doing this.

Siddhant Shah

[jason_h]

I think there is a function that does specifically what you need. You can find it under programming -> numeric -> data manipulation -> join numbers or just search "join numbers". To get two elements you could use a for loop that is half the length of the array and take the current element and join it with the next.

[jason_h]

here is something you can play with

[altenbach]

Assuming you want big-endian byte order, all you need is typecast your U8 array to an U16 array as follows:

Message Edited by altenbach on 12-15-2008 06:20 PM

[altenbach]

Another option is "decimate&Join". (Here it is easy to change the byte order if needed).

Message Edited by altenbach on 12-15-2008 06:28 PM

[Siddhant]

Thank you very much guys.

All this information is very helpful