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# Real estate and Org table formulas
Daniel Gopar (he/him, IRC: gopar, <mailto:gopardaniel@gmail.com>)
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This will be a 20 minute presentation on how I use org mode tables (specifically formulas) on how I can quickly see if a deal is feasible or not.
Topics will include:
- Creating Table Formulas
- Special Buffer Editing Formulas
- Formatting output
- Special Debugging just for formulas
- Creating Custom Formulas
- Automatically re-calculating rows/table
- Finally Putting it all together to tell at a glance if a property is ideal or not
Essentially bits and pieces from this section of the manual:
<https://orgmode.org/manual/The-Spreadsheet.html>
# Discussion
## Notes
- <https://orgmode.org/manual/The-Spreadsheet.html>
- Really liking the idea of the talk so far, but I would suggest zooming in on the text more next time
- Damn, org tables have so many more features than the ones I use already
- tables in org are highly underused. all the functionality of spreadsheet calculators with the power of elisp at your fingertips!
- this talk is awesome
- and org-mode has plenty of hidden power...
- and the power of Emacs Calc, to boot. Including handling units like kW, m, Pa, ...
- +1 for the awesomeness
- I've always been slightly apprehensive of going full spreadsheet with org tables but the features are very cool.
- I actually learned a lot from this talk. Thanks @gopar.
- great talk, thank you very much!
- excellent presentation, thanks!
- loved the presentation
- just downloaded a .webm of the talk. looks great on my screen (1280x720)
- Thanks for the Org mode Table tips
- was a fun, straight forward how to. very useful.
- I don't have any questions now, but I'm going to try to learn many things that you demonstrated!
- I hadn't seen the formula debugger before. Very useful information.
- org tables are so powerful
- moving around cols + rows - is also way faster than what one can do in GUI spreadsheet apps
- oh! great, thanks for sharing!
## Questions and answers
- Q: Pretty neat-- Can you say how this is better than maintaining a
gui spreadsheet?
- A: As all things in life, this is preference. org tables are
text only and for me this is easier than learning yet another
tool (google spreadsheets/MS excel/etc) but totally up to you
:) Also, you can write your formulas in Elisp instead of
whatever crippled language you have to use in other
spreadsheets.+2 (move the logic to lisp to other package and
decouple/reuse it other documents, test it, etc.); Moving around
cols + rows - is also way faster than what one can do in GUI
spreadsheet apps
- Q: Is there a way to share the constants between the tables?
- A: You can create a constants for the entire buffer, or save
them as variables :)
- Q: Can you please provide the link to the org file?
- A: Currently the file is not hosted anywhere. I can put it in a
github repo in a bit :)
- Q:Is there a way to link to a cell in another row in the same table?
or other tables?
- A:I think i remember reading that it is possible to do the first
part of your question. I don't think you can do the 2nd part
about linking cells from other tables. I'd recommend double
checking w/ the org docs since I can be misremembering things :)
- Update: Looks like it is possible ->
<https://orgmode.org/manual/References.html>
- where is the org file for thase calculations?
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