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Automating file names

Question asked by VRFuser on Dec 1, 1997

Like • Show 0 Likes0
Comment • 3

> > For example, this month's data should be saved to:
> >
> > c:folder1folder2dec97_sensor_data
> >
>
> "c:folder1folder2"+month(now())+year(now())+"_sensor_data"
>
> which of course then feeds into a "to file" object for your writing.
>

Had a few minutes so cranked out a VEE program for the above. Note that
my solution modifies your names slightly to be Y2K compliant.

Hopefully this will meet your needs

regards

Stan Bischof
stanb@sr.hp.com

(saveFormat "2.3")
(date "Mon 01/Dec/1997 17:35:09 ")
(veerev "4.01")
(platform "PC")
(execMode fast)
(filterNAN 0)
(workspaceStackingOrder M)
(SaveCF no)
(device 0 ROOTCONTEXT
(properties
(trigMode deg)
(nextID 7)
(popupTitleText "Untitled")
(popupMoveable 1))
(deviceList
(device 0 FORMULA
(properties
(name "calculate file name")
(expr 1 ""c:\\folder1\\folder2\\"+month+year+"_sensor_data""))
(interface
(input 1
(name "Month")
(optional yes))
(input 2
(name "Year")
(optional yes))
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 1 TEXTDISPLAY
(interface
(input 1
(name "Data"))))
(device 4 TOSTRING
(properties
(name "Find Month")
(transactions 1
"WRITE CASE month(now())-1 OF "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" EOL"
))
(interface
(output 1
(name "result")
(lock name constraints)))
(implementation
(attr iopath string write "string"
(readTerm "
")
(fs " ")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
(device 6 TOSTRING
(properties
(name "Find Year")
(transactions 1 "WRITE TEXT year(now()) STR EOL"))
(interface
(output 1
(name "result")
(lock name constraints)))
(implementation
(attr iopath string write "string"
(readTerm "
")
(fs " ")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
(configuration
(connect D2:1 D0:1)
(connect D3:1 D0:2)
(connect D0:1 D1:1)))
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(integerBase decimal))))

No one else has this question

Outcomes

VRFuser Nov 30, 1997 7:31 PM

This list has been great in helping me learn HPVEE, and I hope it's not
too much trouble to ask another question.

I have a HPVEE 4.0 program (UNIX) that will daily download accumulated
measurements made by an HP 34401A and save them to a file. I want each
file to hold a month's worth of data, then automatically change
filenames when a new month begins.

For example, this month's data should be saved to:

c:folder1folder2dec97_sensor_data

Then, come January I would like the program to be smart enough to change
the filename to:

c:folder1folder2jan98_sensor_data

This *could* be done with a file selection dialog box, but couldn't this
be automated so the operator never has to think about it?

Actions

VRFuser Dec 1, 1997 4:55 AM

Roger D. Martin wrote:

> I have a HPVEE 4.0 program (UNIX) that will daily download accumulated
>
> measurements made by an HP 34401A and save them to a file. I want
> each
> file to hold a month's worth of data, then automatically change
> filenames when a new month begins.
>
> For example, this month's data should be saved to:
>
> c:folder1folder2dec97_sensor_data
>
> Then, come January I would like the program to be smart enough to
> change
> the filename to:
>
> c:folder1folder2jan98_sensor_data
>
> This *could* be done with a file selection dialog box, but couldn't
> this
> be automated so the operator never has to think about it?

Roger,
I've attached a program below that shows a way to do this. There are two
examples, both doing the same thing, but the second one is a condensed
version of the first.

Basically, you take the output from now(), input it to a toString object
to convert it to a date/month/year format. Then cut the substrings for
the month and the year using strFromLen objects. Use these as input to a
formula object where you insert them into a path/filename string (be
sure to include the proper escape sequences for the backslash - i.e.
\). Take the output of the formula object and use as the input to the
filename input pin of the toFile object.

Hope this helps,
John

------------------------------------------------------------------------

(saveFormat "2.3")
(date "Mon 01/Dec/1997 20:45:16 ")
(veerev "4.01")
(platform "PC")
(execMode fast)
(filterNAN 0)
(workspaceStackingOrder M)
(SaveCF no)
(device 0 ROOTCONTEXT
(properties
(trigMode deg)
(nextID 18)
(popupTitleText "Untitled")
(popupMoveable 1))
(deviceList
(device 0 FORMULA
(properties
(expr 1 ""c:\\folder1\\folder2\\"+month+year+"_sensor_data""))

(interface
(input 1
(name "month")
(optional yes))
(input 2
(name "year")
(optional yes))
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 3 FORMULA
(properties
(name "now()")
(expr 1 "now()"))
(interface
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 4 TOSTRING
(properties
(transactions 1 "WRITE TEXT a DATE:DMY TIME:HM:H12 EOL"))
(interface
(input 1
(name "A")
(optional yes))
(output 1
(name "result")
(lock name constraints)))
(implementation
(attr iopath string write "string"
(readTerm "
")
(fs " ")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
(device 5 START25)
(device 6 TEXTDISPLAY
(interface
(input 1
(name "Data"))))
(device 7 FORMULA
(properties
(name "strFromLen(str,from,len)")
(expr 1 "strFromLen(str, 3, 3)"))
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(name "str")
(optional yes))
(output 1
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(tag "Result")
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(expr 1 "strDown(str)"))
(interface
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(name "str")
(optional yes))
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(tag "Result")
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(optional yes))))
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(expr 1 "strFromLen(str, 9, 2)"))
(interface
(input 1
(name "str")
(optional yes))
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
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(device 11 TOFILE
(properties
(transactions 1 "WRITE TEXT a EOL"))
(interface
(input 1
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(optional yes))
(input 2
(type control)
(name "File Name")
(requires
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(optional yes)))
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")
(fs "
")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
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(interface
(output 1
(name "Text")
(lock name constraints)))
(implementation
(value Text
(data "data"))
(initValue Text
(data ""))))
(device 13 FORMULA
(properties
(expr 1
""c:\\folder1\\folder2\\"+(strDown(strFromLen(date, 3,
3)))+(strFromLen(date, 9, 2))+"_sensor_data""
))
(interface
(input 1
(name "date")
(optional yes))
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 14 TOSTRING
(properties
(transactions 1 "WRITE TEXT now() DATE:DMY TIME:HM:H12 EOL"))
(interface
(output 1
(name "result")
(lock name constraints)))
(implementation
(attr iopath string write "string"
(readTerm "
")
(fs " ")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
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(device 16 TOFILE
(properties
(transactions 1 "WRITE TEXT a EOL"))
(interface
(input 1
(name "A")
(optional yes))
(input 2
(type control)
(name "File Name")
(requires
(datatype Text)
(shape "Scalar"))
(lock name constraints)
(optional yes)))
(implementation
(attr iopath file append "c:\folder1\folder2\dec97_sensor_data"
(readTerm "
")
(fs "
")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
(device 17 LITERALCONSTANT
(properties
(name "Text"))
(interface
(output 1
(name "Text")
(lock name constraints)))
(implementation
(value Text
(data "data"))
(initValue Text
(data ""))))
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(realRadixSpec 4)
(integerBase decimal))))

Actions

VRFuser Dec 1, 1997 3:56 PM

>
> I have a HPVEE 4.0 program (UNIX) that will daily download accumulated
> measurements made by an HP 34401A and save them to a file. I want each
> file to hold a month's worth of data, then automatically change
> filenames when a new month begins.
>
> For example, this month's data should be saved to:
>
> c:folder1folder2dec97_sensor_data
>
> Then, come January I would like the program to be smart enough to change
> the filename to:
>
> c:folder1folder2jan98_sensor_data
>
> This *could* be done with a file selection dialog box, but couldn't this
> be automated so the operator never has to think about it?
>

Sure. Unless I misunderstand your need, how about generating the
file name directly from a "now()" function? This would give you the
current date. Extract from that the month and year and then feed those
into a formula to determine the correct filename.

something like

"c:folder1folder2"+month(now())+year(now())+"_sensor_data"

which of course then feeds into a "to file" object for your writing.

This would be quite automatic and could easily be extended to
daily, weekly, whatever periods.

Stan Bischof
stanb@sr.hp.com

Actions

3 Replies

VRFuser Nov 30, 1997 7:31 PM
Mark Correct
Correct Answer
This list has been great in helping me learn HPVEE, and I hope it's not
too much trouble to ask another question.

I have a HPVEE 4.0 program (UNIX) that will daily download accumulated
measurements made by an HP 34401A and save them to a file. I want each
file to hold a month's worth of data, then automatically change
filenames when a new month begins.

For example, this month's data should be saved to:

c:folder1folder2dec97_sensor_data

Then, come January I would like the program to be smart enough to change
the filename to:

c:folder1folder2jan98_sensor_data

This *could* be done with a file selection dialog box, but couldn't this
be automated so the operator never has to think about it?
Like • Show 0 Likes0
Actions
VRFuser Dec 1, 1997 4:55 AM
Mark Correct
Correct Answer
Roger D. Martin wrote:

> I have a HPVEE 4.0 program (UNIX) that will daily download accumulated
>
> measurements made by an HP 34401A and save them to a file. I want
> each
> file to hold a month's worth of data, then automatically change
> filenames when a new month begins.
>
> For example, this month's data should be saved to:
>
> c:folder1folder2dec97_sensor_data
>
> Then, come January I would like the program to be smart enough to
> change
> the filename to:
>
> c:folder1folder2jan98_sensor_data
>
> This *could* be done with a file selection dialog box, but couldn't
> this
> be automated so the operator never has to think about it?

Roger,
I've attached a program below that shows a way to do this. There are two
examples, both doing the same thing, but the second one is a condensed
version of the first.

Basically, you take the output from now(), input it to a toString object
to convert it to a date/month/year format. Then cut the substrings for
the month and the year using strFromLen objects. Use these as input to a
formula object where you insert them into a path/filename string (be
sure to include the proper escape sequences for the backslash - i.e.
\). Take the output of the formula object and use as the input to the
filename input pin of the toFile object.

Hope this helps,
John

------------------------------------------------------------------------

(saveFormat "2.3")
(date "Mon 01/Dec/1997 20:45:16 ")
(veerev "4.01")
(platform "PC")
(execMode fast)
(filterNAN 0)
(workspaceStackingOrder M)
(SaveCF no)
(device 0 ROOTCONTEXT
(properties
(trigMode deg)
(nextID 18)
(popupTitleText "Untitled")
(popupMoveable 1))
(deviceList
(device 0 FORMULA
(properties
(expr 1 ""c:\\folder1\\folder2\\"+month+year+"_sensor_data""))

(interface
(input 1
(name "month")
(optional yes))
(input 2
(name "year")
(optional yes))
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 3 FORMULA
(properties
(name "now()")
(expr 1 "now()"))
(interface
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 4 TOSTRING
(properties
(transactions 1 "WRITE TEXT a DATE:DMY TIME:HM:H12 EOL"))
(interface
(input 1
(name "A")
(optional yes))
(output 1
(name "result")
(lock name constraints)))
(implementation
(attr iopath string write "string"
(readTerm "
")
(fs " ")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
(device 5 START25)
(device 6 TEXTDISPLAY
(interface
(input 1
(name "Data"))))
(device 7 FORMULA
(properties
(name "strFromLen(str,from,len)")
(expr 1 "strFromLen(str, 3, 3)"))
(interface
(input 1
(name "str")
(optional yes))
(output 1
(name "Result")
(tag "Result")
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(optional yes))))
(device 8 FORMULA
(properties
(name "strDown(str)")
(expr 1 "strDown(str)"))
(interface
(input 1
(name "str")
(optional yes))
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 9 FORMULA
(properties
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(expr 1 "strFromLen(str, 9, 2)"))
(interface
(input 1
(name "str")
(optional yes))
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 11 TOFILE
(properties
(transactions 1 "WRITE TEXT a EOL"))
(interface
(input 1
(name "A")
(optional yes))
(input 2
(type control)
(name "File Name")
(requires
(datatype Text)
(shape "Scalar"))
(lock name constraints)
(optional yes)))
(implementation
(attr iopath file append "myFile"
(readTerm "
")
(fs "
")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
(device 12 LITERALCONSTANT
(properties
(name "Text"))
(interface
(output 1
(name "Text")
(lock name constraints)))
(implementation
(value Text
(data "data"))
(initValue Text
(data ""))))
(device 13 FORMULA
(properties
(expr 1
""c:\\folder1\\folder2\\"+(strDown(strFromLen(date, 3,
3)))+(strFromLen(date, 9, 2))+"_sensor_data""
))
(interface
(input 1
(name "date")
(optional yes))
(output 1
(name "Result")
(tag "Result")
(lock name constraints)
(optional yes))))
(device 14 TOSTRING
(properties
(transactions 1 "WRITE TEXT now() DATE:DMY TIME:HM:H12 EOL"))
(interface
(output 1
(name "result")
(lock name constraints)))
(implementation
(attr iopath string write "string"
(readTerm "
")
(fs " ")
(eol "
")
(multiField fullSyntax)
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")
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")
(eol "
")
(multiField fullSyntax)
(arrayFormat block))))
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(points 2 120 83 120 114))
(connect D1:1 D2:1
(points 2 197 150 216 150))
(connect D0:1 D4:1
(points 6 1209 260 1230 260 1230 370 790 370 790 330 810 330))
(connect D2:1 D5:1
(points 2 284 150 299 150))
(connect D5:1 D6:1
(points 4 580 150 590 150 590 160 602 160))
(connect D2:1 D7:1
(points 6 284 150 290 150 290 170 280 170 280 260 299 260))
(connect D9:1 D8:1
(points 4 1139 180 1230 180 1230 240 1243 240))
(connect D0:1 D8:2
(points 2 1209 260 1243 260))
(connect D11:1 D10:1
(points 2 224 510 249 510))
(connect D12:0 D11:0
(points 2 190 463 190 499))
(connect D14:1 D13:1
(points 4 999 440 1030 440 1030 490 1043 490))
(connect D10:1 D13:2
(points 2 1011 510 1043 510)))
(stackingOrder 1 2 3 5 7 6 0 8 9 11 12 13 14 10 4))
(numberFormats
(realFormat standard)
(realSigDigits 4)
(realRadixSpec 4)
(integerBase decimal))))
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VRFuser Dec 1, 1997 3:56 PM
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Correct Answer
>
> I have a HPVEE 4.0 program (UNIX) that will daily download accumulated
> measurements made by an HP 34401A and save them to a file. I want each
> file to hold a month's worth of data, then automatically change
> filenames when a new month begins.
>
> For example, this month's data should be saved to:
>
> c:folder1folder2dec97_sensor_data
>
> Then, come January I would like the program to be smart enough to change
> the filename to:
>
> c:folder1folder2jan98_sensor_data
>
> This *could* be done with a file selection dialog box, but couldn't this
> be automated so the operator never has to think about it?
>

Sure. Unless I misunderstand your need, how about generating the
file name directly from a "now()" function? This would give you the
current date. Extract from that the month and year and then feed those
into a formula to determine the correct filename.

something like

"c:folder1folder2"+month(now())+year(now())+"_sensor_data"

which of course then feeds into a "to file" object for your writing.

This would be quite automatic and could easily be extended to
daily, weekly, whatever periods.

Stan Bischof
stanb@sr.hp.com
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