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| bio | website | |
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| location | ||
| age | ||
| visits | member for | 1 year, 4 months |
| seen | 3 hours ago | |
| stats | profile views | 369 |
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Apr 29 |
comment |
Significant platform-dependent efficiency when importing data? using such an approach is possible for every OS: all you need is powerful command line programs to extract the data. head, tail and cut are standard unix programs which are available in probably every Linux distro and MacOS but not by default on Windows. You can install such command line programs on Windows, cygwin being a very convenient way to install a whole bunch of those running in an environment emulating a complete unix system. You can instead only install those cmd-line tools you're actually using. For more possibilities see the documentation (==man pages) of those programs... |
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Apr 29 |
comment |
Import large amount of data with time stamps You can read the first two columns as string and convert to date lists with DateList. With that result you can then use e.g. DateListPlot. As converting with DateList might be relatively slow and your date format is fixed, I would suggest to use a StringReplace + ToExpression approach for improved performance. I think answers to this question will also be relevant, although your file seems to rather be large but not yet huge. |
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Apr 29 |
comment |
Network database access - How do I connect to a remote database? AFAIK an Access database is just a plain file and the usual approach is to make the file accessable from the remote computer via e.g. a "network drive". It then can be used like a local file with the usual ODBC driver, but you'll probably have to configure that. As there is no real database server involved, concurrent usage of the same database file with several processes/programs will only be possible within certain limits (which I don't know about), and if you need concurrent read/write you certainly should consider installing/running a real database server... |
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Apr 29 |
awarded | Nice Answer |
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Apr 29 |
revised |
Reading periodic elements from a large file added notes about actual observed memory consumption |
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Apr 27 |
revised |
Why function cannot be defined inside For loop? added notes about compoundexpression |
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Apr 26 |
awarded | Nice Answer |
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Apr 26 |
comment |
CDF won't work but NB works @dabd: just tested my code locally with the browser-plugin and it seems to work alright. I guess that there is something wrong with your setup for the embedding in the blog post and the message that the cdf couldn't be loaded also IMO rather looks like something not related to the actual content of the CDF. Maybe an issue with accessability or just a typo in the filenames/urls? |
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Apr 26 |
revised |
CDF won't work but NB works added note about cdf-plugin |
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Apr 26 |
comment |
CDF won't work but NB works @dabd: hm, have you tried to export as "Web Embedable" and run it from a local html-file in your browser? I'd ensure that this works before I'd try it from a remote site. Honestly I have only tested my answer with the "Standalone" export, it could be that for the sandboxed plugin even the Number form of InputField isn't supported. I'll try that and probably adopt my answer accordingly... |
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Apr 26 |
revised |
Why function cannot be defined inside For loop? added 162 characters in body |
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Apr 26 |
answered | How to get rid of trailing string after using Convert? |
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Apr 26 |
answered | CDF won't work but NB works |
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Apr 26 |
comment |
How can I assign a Fit result to a function? @AndreaColonna: one more point: you can/should use the same techniques to localize or protect the symbols used as function arguments as in J.M.s answer, e.g.: line2=Block[{y},Function[{y}, Evaluate[Fit[{p1, p2}, {1, y}, y]]]] |
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Apr 26 |
comment |
How can I assign a Fit result to a function? @AndreaColonna: if you wonder about SetDelayed, why don't you just exchange it to Set (=). That works alright and is the thing to do here. With that change, I think it is a perfect way to define such a function, to some extent I like that even better than the function definition per downvalues. You should also note that the Evaluated -> True option isn't actually necessary then. |
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Apr 26 |
answered | Why function cannot be defined inside For loop? |
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Apr 23 |
answered | Substituting Data from File |
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Apr 23 |
answered | Define variable relationships and dynamically update variables |
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Apr 17 |
revised |
How to split a file? deleted 3 characters in body |
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Apr 17 |
answered | How to remove a singularity with WhenEvent |
