Thanks Dar! This is exactly (manipulating imageData) what I was looking for. Best wishes Viktoras -------Original Message------- From: Dar Scott Date: 09/15/06 23:48:39 To: How to use Revolution Subject: Re: writing to binary data at arbitrary position On Sep 15, 2006, at 12:09 PM, Viktoras Didziulis wrote: > What is the fastest way (in Rev), for instance, to insert 3 bytes > of binary > data after the 465th byte of data stored in variable myVar using > put, seek > or whatever else is available? Or is the repeat loop the only way > to do > this?.. If you mean that the bytes after the 465th byte are shifted down, then the method Mark Smith mentioned would work. If you mean that you want to replace bytes 466, 467 and 468, then you can do this: put binDat into char 466 to 468 of myVar (There is a feature request in bugzilla to allow the word 'byte' in this context.) How you create binDat depends on the form of the binary data. Look at the binaryEncode() function. Exactly how you would use that depends on whether you need 3 byte numbers, a single 24-bit number or a byte plus a 16-bit number or something else. You can also use numToChar() to create a byte that you think of as binary. However, my opinion on this has changed and I now encourage use of binaryEncode() even for single bytes. With binaryEncode() you can encode all three values at once. If you are working with imageData and are replacing pixels, then this is the way to go. If you are building a new imageData, don't forget the 0 byte--build all 4 bytes at once and then append to the variable with 'put...after...'. Dar -- ************************************** Dar Scott Dar Scott Consulting and Dar's Lab 8637 Horacio Place NE Albuquerque, NM 87111 Lab, office, home: +1 505 299 9497 Fax: call above first Skype: ask http://www.swcp.com/dsc [EMAIL PROTECTED] Computer programming ************************************** _______________________________________________ use-revolution mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution _______________________________________________ use-revolution mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
