LabVIEW
How to create a txt file, load it, modify it and then save it again?
Hi JB and Kabanga,
by using a cluster with all needed controls it will be very easy to mimic the behaviour of the config file functions.
All you have to do:
1) one vi to convert this cluster to a string containing one block of data including the "begin" and "end"-lines ("format into string")
2) one vi to convert a string containing one block of data to this cluster ("scan from string")
3) one vi to read a whole file and split it into blocks
4) one vi to take an array of clusters, convert them to strings and write to file
5) user interface: one cluster shown at interface, maybe selection for array index to select other blocks, "load file" and "save file" button, event structure to handle all this
by using a cluster with all needed controls it will be very easy to mimic the behaviour of the config file functions.
All you have to do:
1) one vi to convert this cluster to a string containing one block of data including the "begin" and "end"-lines ("format into string")
2) one vi to convert a string containing one block of data to this cluster ("scan from string")
3) one vi to read a whole file and split it into blocks
4) one vi to take an array of clusters, convert them to strings and write to file
5) user interface: one cluster shown at interface, maybe selection for array index to select other blocks, "load file" and "save file" button, event structure to handle all this
Hi Kabanga,
you cannot rate when you are new in the forum... You have to have some more contributions before you're allowed to!
you cannot rate when you are new in the forum... You have to have some more contributions before you're allowed to!
Hi Kabanga,
some notes:
1) using property nodes "label.text" is quite senseless: the label will not changed during runtime, so you can replace those property nodes with a string constant.
2) instead of al those "concat string" functions you can use "format into string" with a proper format string, eleminating all those single string constants and "number to decimal string".
To include "begin LineX" and "end lineX" you need just one additional "format into string" at the end of the "block" building (last "concat string") and one additional input for the block number. When you include all your string building in a subvi, you can put this subvi in a for loop and use the iteration count as input...
some notes:
1) using property nodes "label.text" is quite senseless: the label will not changed during runtime, so you can replace those property nodes with a string constant.
2) instead of al those "concat string" functions you can use "format into string" with a proper format string, eleminating all those single string constants and "number to decimal string".
To include "begin LineX" and "end lineX" you need just one additional "format into string" at the end of the "block" building (last "concat string") and one additional input for the block number. When you include all your string building in a subvi, you can put this subvi in a for loop and use the iteration count as input...
