* 2 questions on tables
@ 2013-07-15 6:47 Andreas Leha
2013-07-15 8:41 ` Michael Brand
0 siblings, 1 reply; 3+ messages in thread
From: Andreas Leha @ 2013-07-15 6:47 UTC (permalink / raw)
To: emacs-orgmode
Hi all,
I have two questions concerning tables in orgmode:
1. What is the best way to handle missing values?
I have the problem, that missing values ("") are treated as "0" when they
appear in a formula.
Entering ("nil") instead helps a bit, but does not propagate,
i.e. nil + 1 results in 0.
Can I do better?
2. What is the best way to drop a column while preserving the number of
digits displayed?
I use a simple code block to drop the columns. But I do not see how
to prevent orgmode from dropping trailing 0s
Here is an example demonstrating both questions:
--8<---------------cut here---------------start------------->8---
#+TITLE: Drop columns
* Create Some Table with a Missing Value
#+name: mytable
| Item | Price ($) | Price ($+1) |
|-----------+-----------+-------------|
| Apple | 10.55 | 11.55 |
| Tomato II | nil | 0.00 |
| Tomato | | 1.00 |
| Pear | 3.00 | 4.00 |
| Monkey | 100.55 | 101.55 |
|-----------+-----------+-------------|
| Sum | 10.55 | 118.10 |
#+TBLFM: $3=$2+1;%.2f::@7$2=vsum(@I..@II);%.2f::@7$3=vsum(@I..@II);%.2f
* Drop a Column
#+name: mysmalltable
#+begin_src emacs-lisp :var input=mytable[,0:1] :exports results
input
#+end_src
#+results: mysmalltable
| Item | Price ($) |
|--------+-----------|
| Apple | 10.55 |
| Tomato | |
| Pear | 3.0 |
| Monkey | 100.55 |
--8<---------------cut here---------------end--------------->8---
Regards,
Andreas
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 2 questions on tables
2013-07-15 6:47 2 questions on tables Andreas Leha
@ 2013-07-15 8:41 ` Michael Brand
2013-07-15 9:12 ` Andreas Leha
0 siblings, 1 reply; 3+ messages in thread
From: Michael Brand @ 2013-07-15 8:41 UTC (permalink / raw)
To: Andreas Leha; +Cc: Org Mode
Hi Andreas
On Mon, Jul 15, 2013 at 8:47 AM, Andreas Leha
<andreas.leha@med.uni-goettingen.de> wrote:
> I have two questions concerning tables in orgmode:
I try to answer your first question:
> 1. What is the best way to handle missing values?
> I have the problem, that missing values ("") are treated as "0" when they
> appear in a formula.
> Entering ("nil") instead helps a bit, but does not propagate,
> i.e. nil + 1 results in 0.
> Can I do better?
Is this what you are looking for?:
| Tomato | | |
| Pear | 3.00 | 6.00 |
#+TBLFM: $3 = if("$2" == "nan", string(""), 2 * $2 +.0); E f-2
For "E" see
http://orgmode.org/org.html#Formula-syntax-for-Calc
and for "+.0; f-2" see
http://orgmode.org/worg/org-faq.html#table-float-fraction
Michael
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 2 questions on tables
2013-07-15 8:41 ` Michael Brand
@ 2013-07-15 9:12 ` Andreas Leha
0 siblings, 0 replies; 3+ messages in thread
From: Andreas Leha @ 2013-07-15 9:12 UTC (permalink / raw)
To: emacs-orgmode
Hi Michael,
Michael Brand <michael.ch.brand@gmail.com> writes:
> Hi Andreas
>
> On Mon, Jul 15, 2013 at 8:47 AM, Andreas Leha
> <andreas.leha@med.uni-goettingen.de> wrote:
>> I have two questions concerning tables in orgmode:
>
> I try to answer your first question:
>
>> 1. What is the best way to handle missing values?
>> I have the problem, that missing values ("") are treated as "0" when they
>> appear in a formula.
>> Entering ("nil") instead helps a bit, but does not propagate,
>> i.e. nil + 1 results in 0.
>> Can I do better?
>
> Is this what you are looking for?:
>
> | Tomato | | |
> | Pear | 3.00 | 6.00 |
> #+TBLFM: $3 = if("$2" == "nan", string(""), 2 * $2 +.0); E f-2
>
> For "E" see
> http://orgmode.org/org.html#Formula-syntax-for-Calc
> and for "+.0; f-2" see
> http://orgmode.org/worg/org-faq.html#table-float-fraction
>
> Michael
thanks a lot! All three comments (the if() statement, the "E" and the
"f-2") of yours are extremely helpful.
Question one solved.
Cheers,
Andreas
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-07-15 6:47 2 questions on tables Andreas Leha
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2013-07-15 9:12 ` Andreas Leha
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