The documentation about generating synthetic dataset on this page seems to be incorrect:
http://www.philippe-fournier-viger.com/spmf/Generating_synthetic_sequence_database_with_timestamps.php

```
java -jar spmf.jar run Generate_a_sequence_database_with_timestamps no_input_file output.txt 100 1000 3 7
>/home/cyang/workspace/spmf/spmf.jar
An error while trying to run the algorithm. 
 ERROR MESSAGE = java.lang.IllegalArgumentException: 

 The 1st parameter value of this algorithm 'Transaction count' is of an incorrect type. The provided value is 'output.txt' but it should be of type: Integer.
java.lang.IllegalArgumentException: 

 The 1st parameter value of this algorithm 'Transaction count' is of an incorrect type. The provided value is 'output.txt' but it should be of type: Integer.
	at ca.pfv.spmf.gui.CommandProcessor.runAlgorithm(CommandProcessor.java:294)
	at ca.pfv.spmf.gui.Main.processCommandLineArguments(Main.java:128)
	at ca.pfv.spmf.gui.Main.main(Main.java:54)
```

When I remove the option `no_input_file`, it works fine now.

I am not quite sure if the problem is related with old version of spmf.

Hi,

Thanks a lot for reporting this problem in the documentation:-)

It is indeed because the code has changed and it is no longer necessary to indicate that there is no input file. I somehow forgot to update the documentation.

Now it is done!

Thanks!

Philippe