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I am a starter of Netlogo. Now, I need to create a diffusion model in Netlogo for a biochemical model of liquids with living cells. Can you kindly give me some reference. Thanks a lot!
Check out the Osmotic Pressure model in the Models Library. It's under Chemistry & Physics / (unverified)/
There are a few examples in Netlogo Model Library, (File > Model Library > then in search box search diffusion)
For example, this one explores the power behind patch primitive ‘diffuse’. (Its art related not chemistery !)
Or this one demonstrates diffusion-limited aggregation.
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Is there a tool that takes a short Lisp code snippet and then generate a series of box diagrams to represent state for each step of the code?
I am thinking of something like this: Online Python Tutor.
Something like this can be good for answering newbie Lisp questions. A lot of newbie questions are based on confusion on one or more of the following:
implications of pass by sharing
shared structure
destructive functions
all of which can be demonstrated easily and visually by invoking such a tool. I wouldn't have to draw a box diagram to help a fellow newbie, I could just generate the diagrams by feeding the newbie's code or my example code into that tool. I wouldn't have to hope that the newbie would know words like reference, same object, different object, object identity, fresh cons, because the diagrams would tell the whole story, even help explain what those words mean.
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Please recommend free visual modelling tool with reverse engineering feature if such exists.
I've been happy with SchemaSpy for visual modelling. It produces handy reports on the DB structure and relationships, good structural diagrams, and more. See these sample pages from a simple demo database, including this structural diagram . It also has the handy ability to produce smaller structural diagrams specific to each table, showing relationships with that table by one or two degrees of separation.
SchemaSpy works great with PostgreSQL. Just make sure you put the path to the PgJDBC driver jar on the SchemaSpy command line as -dp /path/to/PgJDBC.jar.
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In mij admin i have a list of posts but this list is really really big. I want to make a send form that i can use to active an database filter (so the form gets translated to where / and / or filters). Is there some good example code that i could read or maybe a tutorial ?. Any advise ?
A nice & short previous answer on that.
The reference Matthew Weier O'Phinney's page on Zend_Form used in the Model layer
And just another one if you want
Search on goole with 'Zend_Form' and 'Model Layer' will certainly gives you some others.
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I wonder if anyone ever posted an example project that uses Core Plot?
I would suggest the best website for iOS development tutorial.
Here is the simplest core data example what you are looking for, with great explanation and source code.
http://www.raywenderlich.com/13269/how-to-draw-graphs-with-core-plot-part-1
http://www.raywenderlich.com/13271/how-to-draw-graphs-with-core-plot-part-2
Hope this helps.
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One of my projects needs to show users where they rank in certain calculations. I inherited the graph structure from the previous programmer and had to leave it alone while I worked on other parts of the site.
It's time to make the graphs more meaningful, so I'm looking for books/websites/etc about graphs. (Not graph theory!) Charts that convey comparisons at a glance.
Everyone suggests The Visual Display of Quantitative Information by Edward Tufte and that's spot on for what I'm looking for, so anything related to that would be great.
Naturally, personal experience about what to do or not would be helpful as well.
I found Stephen Few's book "Show Me the Numbers" very helpful.