Simple way to draw graphs ?

users
#1

Hello

I'd like to use LO to redraw graphs scanned from a book, such at this one:

<http://nabble.documentfoundation.org/file/n4220553/test.png>

Is there a simple way in LO to do this, ideally without using maths (unless
it's a no-brainer)?

Thank you.

#2

The only way I know to do this in LibreOffice *or* MS Office is to
enter the values in a spreadsheet, create the graph, then link the
graph to the word processor.

If one obtains high-quality scans of the graphs and saves them as
images, they could be inserted as images, but that wouldn't be
redrawing the graphs.

#3

Re-using graphs directly scanned from a book, without permission of the
copyright owner, would also be a violation of international copyright law.

Tom

#4

Hi,

Gilles schrieb:

Hello

I'd like to use LO to redraw graphs scanned from a book, such at this one:

<http://nabble.documentfoundation.org/file/n4220553/test.png>

Is there a simple way in LO to do this, ideally without using maths (unless
it's a no-brainer)?

You mean, that you do not have the underlying data?

In that case, you can use the scan directly.

Or in case the scan is too ugly, you have to read the scan and enter the coordinates as data in the table. From the image I guess, that five points are sufficient. You need an XY-chart, because otherwise the years are not at the ticks but between the ticks.

Generate the chart in Calc. Uncheck the option to use "Source Format" in the Numbers tab of the axis properties dialog. That makes it easier to copy&paste the chart to Writer.

Yes, you can redraw the graph, but you might learn a little bit about making a chart.

Kind regards
Regina

#5

Surely reconstituting such a graph - as is being suggested - might well be so too?

Brian Barker

#6

Can I also point out that LO isn't necessarily the correct tool? I've lately discovered the joys of gnuplot -- more flexible than LO, and an image created by it could of course be imported into an LO document.

As others have pointed out, beware copyright of the data.

#7

Gilles schrieb:

I'd like to use LO to redraw graphs scanned from a book, such at this
one:

<http://nabble.documentfoundation.org/file/n4220553/test.png>

Can I also point out that LO isn't necessarily the correct tool? I've
lately discovered the joys of gnuplot -- more flexible than LO, and an
image created by it could of course be imported into an LO document.

And since it supports SVG, it can be post edited by Inkscape before
inserting it as razor sharp image (set term svg, set output
"yourfile.svg, before plot")

As others have pointed out, beware copyright of the data.

Please also be aware of the fact that data itself is not copyrighted. In
other words, copying data to Calc and use it to create a graph and an
accompanying table should never be a problem - if my memory serves me well.

#8

This may be true in the USA (is it?), but a few seconds of web searching shows this certainly not to be so in all jurisdictions. (The text on the original chart was in French and the original enquirer wrote from a French e-mail address.)

Brian Barker

#9

Regina Henschel wrote

Or in case the scan is too ugly, you have to read the scan and enter the
coordinates as data in the table. From the image I guess, that five points
are sufficient. You need an XY-chart, because otherwise the years
are not at the ticks but between the ticks.

Generate the chart in Calc. Uncheck the option to use "Source Format" in
the Numbers tab of the axis properties dialog. That makes it easier to
copy&paste the chart to Writer.

Thank you.

#10

Hello

I'd like to use LO to redraw graphs scanned from a book, such at this one:

<http://nabble.documentfoundation.org/file/n4220553/test.png>

Is there a simple way in LO to do this, ideally without using maths (unless
it's a no-brainer)?

Thank you.

There is an extension to get data from a scanned graph

https://extensions.libreoffice.org/extensions/digitizer-of-xy-chart

I've never used it, though, so I do not know how well (or if) it works.

Regards,
Ricardo

#11

Hi all:

         As I understand, there is a way to use some information from other authors: Put quotation marks to the information that we need to reference and put a footer where we have to put the information of the authors and more. When we use a graph, we can do similar. And I think it doesn't break the copyright.

I hope this help,

Jorge Rodríguez

#12

You're right about complexity and everyone should make a well thought
decision. I've asked a lawyer and translated his Dutch answer to English:

#13

Can Calc plot an empty x/y graph with just the labels on the two sides and
grid, like this:

https://tex.stackexchange.com/questions/278295/how-can-i-draw-an-empty-plot

And if it can export it as a vector graphic, I could open it in a paint
application and draw the curves manually without trying to guess the
original maths.

#14

Almost there :slight_smile:

One last thing I didn't figure out: Why does Calc display the Y axis every
other data (0-2-4, instead of 0-1-2-3)?

https://s27.postimg.org/3uvol2mhf/Libre_Office.calc.empty.x.y.chart.png

#15

Hi,

You can adjust the scaling of number values by formatting the axis.
Select the axis (click on one of the numbers) on the graph, then right
click and select Format Axis... On the first tab (Scale), you can
unselect the "Automatic" scaling for the major and minor intervals and
then place the value of your choice.

I hope this helps.

Rémy Gauthier.

Almost there :slight_smile:

> One last thing I didn't figure out: Why does Calc display the Y axis

every

other data (0-2-4, instead of 0-1-2-3)?

> https://s27.postimg.org/3uvol2mhf/Libre_Office.calc.empty.x.y.chart.p

ng

--
> View this message in context: http://nabble.documentfoundation.org/Si

mple-way-to-draw-graphs-tp4220553p4220680.html

#16

remygauthier wrote

You can adjust the scaling of number values by formatting the axis. Select
the axis (click on one of the numbers) on the graph, then right click and
select Format Axis... On the first tab (Scale), you can unselect the
"Automatic" scaling for the major and minor intervals and then place the
value of your choice.

Thanks, I don't know where to click: "Select the axis" → In the data in the
grid? Somewhere In the Wizard? On the graph in the grid?

https://s3.postimg.org/jgyvun80j/Libre_Office.calc.empty.x.y.chart.how.to.change.y.png

#17

Found it:

1. Double-click on the chart
2. Format > Axis > Y Axis
3. In the Scale dialog, uncheck Automatic for the Major/Minor interval
(count), and assign "1"
4. OK.

Thanks !

#18

I think you are confusing copyright with plagiarism. Yes, it is important - especially in academic works - not to misrepresent something as your own work when it is actually derived from someone else's, and there are indeed fair dealing exceptions in most copyright laws. But simply citing sources does not give you the right to reuse copyright material.

Brian Barker