gnuplot-info

[Gnuplot-info] Write text value for a specific x

[LukasP <LP...@po...>]

Hello,

let's have a datafile "a.txt":

1 10 100
2 15 150
3 30 300

Let's have a predefined value, say "X=2".

Let's plot the datafile by:

plot "a.txt" u 1:2 w lp, "" u 1:3 w lp

Is it possible (and if so, how?) to make gnuplot plot the y-value of the 2nd
column as text for (only) this preset X?

Let's have another datafile, "b.txt":

1 10 100
2 15 150 *
3 30 300

Is it possible (and if so, how?) to make gnuplot plot the y-value as text
(only) when the line of the datafile contains "*" at the last position (or
wherever on the line)?

Thank you in advance.

LukasP

-- 
View this message in context: http://old.nabble.com/Write-text-value-for-a-specific-x-tp29551956p29551956.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.

Re: [Gnuplot-info] Write text value for a specific x

[Thomas S. <t.s...@fz...>]

xx=2
plot "a.txt" u 1:2 w lp, "" u 1:3 w lp, "" u 1:($1==xx?$2:0/0):2 w labels

or

plot "b.txt" u 1:2 w lp, "" u 1:3 w lp, "" u
1:(strlen("".stringcolumn(4))>0?$2:0/0):2 w labels


LukasP wrote:
> 
> Hello,
> 
> let's have a datafile "a.txt":
> 
> 1 10 100
> 2 15 150
> 3 30 300
> 
> Let's have a predefined value, say "X=2".
> 
> Let's plot the datafile by:
> 
> plot "a.txt" u 1:2 w lp, "" u 1:3 w lp
> 
> Is it possible (and if so, how?) to make gnuplot plot the y-value of the
> 2nd column as text for (only) this preset X?
> 
> Let's have another datafile, "b.txt":
> 
> 1 10 100
> 2 15 150 *
> 3 30 300
> 
> Is it possible (and if so, how?) to make gnuplot plot the y-value as text
> (only) when the line of the datafile contains "*" at the last position (or
> wherever on the line)?
> 
> Thank you in advance.
> 
> LukasP
> 
> 

-- 
View this message in context: http://old.nabble.com/Write-text-value-for-a-specific-x-tp29551956p29553294.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.

Re: [Gnuplot-info] Write text value for a specific x; shift text vertically

[LukasP <LP...@po...>]

Thanks, this works perfectly.

I would have one more question. I'm drawing plot by:

plot "b.txt" u 1:2 w lp, "" u 1:2:3 w labels

Is it possible to specify somehow the alignment of the texts? E.g. to be
aligned above or under the coordinates read from file? If I use the command
written above, the text gets "scratched" by the plot. If texts were placed
higher, they wouldn't seem scratched.

I know I can write:

plot "b.txt" u 1:2 w lp, "" u 1:($2+100):3 w labels

which moves texts 100 units above. But the problem is that I'm using the
script for plotting many files and y-range of each varies. Thus I don't know
what the offset (= 100 in the example) should be - this one value doesn't
work generally for all files to be plotted.

I tried as well:

plot "b.txt" u 1:2 w lp, "" u 1:2:(stringcolumn(3)."\n") w labels

hoping that the "\n" character will cause the text to be shifted above
(similarly 1:2:("\n".stringcolumn(3)) to shift down). But it doesn't work.

So is there a switch like "w labels above" or "w labels ls XYZ" where "XYZ"
would define the shift?

Or how would you solve the problem?

Thanks in advance.

LukasP

-- 
View this message in context: http://old.nabble.com/Write-text-value-for-a-specific-x-tp29551956p29567248.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.

Re: [Gnuplot-info] Write text value for a specific x; shift text vertically

[Thomas S. <t.s...@fz...>]

plot "b.txt" u 1:2 w lp, "" u 1:2:3 w labels offset graph 0.1,0.0


LukasP wrote:
> 
> Thanks, this works perfectly.
> 
> I would have one more question. I'm drawing plot by:
> 
> plot "b.txt" u 1:2 w lp, "" u 1:2:3 w labels
> 
> Is it possible to specify somehow the alignment of the texts? E.g. to be
> aligned above or under the coordinates read from file? If I use the
> command written above, the text gets "scratched" by the plot. If texts
> were placed higher, they wouldn't seem scratched.
> 
> I know I can write:
> 
> plot "b.txt" u 1:2 w lp, "" u 1:($2+100):3 w labels
> 
> which moves texts 100 units above. But the problem is that I'm using the
> script for plotting many files and y-range of each varies. Thus I don't
> know what the offset (= 100 in the example) should be - this one value
> doesn't work generally for all files to be plotted.
> 
> I tried as well:
> 
> plot "b.txt" u 1:2 w lp, "" u 1:2:(stringcolumn(3)."\n") w labels
> 
> hoping that the "\n" character will cause the text to be shifted above
> (similarly 1:2:("\n".stringcolumn(3)) to shift down). But it doesn't work.
> 
> So is there a switch like "w labels above" or "w labels ls XYZ" where
> "XYZ" would define the shift?
> 
> Or how would you solve the problem?
> 
> Thanks in advance.
> 
> LukasP
> 
> 

-- 
View this message in context: http://old.nabble.com/Write-text-value-for-a-specific-x-tp29551956p29567358.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.