Search found 15 matches

by Eric Thomson
Fri Feb 20, 2009 9:00 pm
Forum: NEURON Announcements
Topic: The NEURON Book: errata and discussion
Replies: 37
Views: 54090

Re: Figure 11.17

[T]he reason that I could select it on Feb. 18 was that the code I was executing was old and contained a statement that created a host cell. When I used the code that you sent me, and when I started from scratch and followed the instructions that you were following, I couldn't select local variable...
by Eric Thomson
Wed Feb 18, 2009 2:37 pm
Forum: NEURON Announcements
Topic: The NEURON Book: errata and discussion
Replies: 37
Views: 54090

Re: Figure 11.17

OK, will do when I get home (at lab presently), and will get that information to you. Thanks.
by Eric Thomson
Wed Feb 18, 2009 7:26 am
Forum: NEURON Announcements
Topic: The NEURON Book: errata and discussion
Replies: 37
Views: 54090

Figure 11.17

Thanks Ted you are a machine the way you respond. Figure 11.17 : I can't reproduce it. In the Details window from the Variable Time Step GUI, when I click on 'local step' it doesn't put a check mark there. If 'use variable dt' is already selected in the main VariableTimeStep GUI, then clicking 'loca...
by Eric Thomson
Tue Feb 17, 2009 8:37 pm
Forum: NEURON Announcements
Topic: The NEURON Book: errata and discussion
Replies: 37
Views: 54090

Figure 11.12

Minor problem: working through Chapter 11 using the GUI to build a net, what I see when I press the weights button is different from what is shown on Figure 11.12. Namely, on the left-hand-side of the windo, I get a list of numbers that I've entered into the weights numeric field. That is, I get -0....
by Eric Thomson
Thu Aug 21, 2008 11:57 am
Forum: Getting started
Topic: Arguments to addvar?
Replies: 3
Views: 2191

Re: Arguments to addvar?

What you're calling "[2]" is just the second form presented in the Programmer's Reference. Yes, I used the simplest call in which line color can be specified. For those interested, the undocumented arguments four through six seem to affect the appearance of the label, not the lines (they influence ...
by Eric Thomson
Wed Aug 20, 2008 11:29 pm
Forum: Getting started
Topic: Arguments to addvar?
Replies: 3
Views: 2191

Arguments to addvar?

In the code I'm using from the book, the addvar process is typically fed six arguments (e.g., listing 6.3): g.addvar("soma.v(0.5)",1,1,0.6,0.9,2) [1]. However, from the hoc reference online ( http://www.neuron.yale.edu/neuron/static/docs/help/neuron/general/classes/graph.html#addvar ), the different...
by Eric Thomson
Mon Jul 28, 2008 10:43 pm
Forum: Adding new mechanisms and functions to NEURON
Topic: Channel builder export?
Replies: 5
Views: 3084

Re: Channel builder export?

Many thanks for taking the time to explain this to me. I look forward to figuring this stuff out!
by Eric Thomson
Mon Jul 28, 2008 6:13 pm
Forum: Adding new mechanisms and functions to NEURON
Topic: Channel builder export?
Replies: 5
Views: 3084

Re: Channel builder export?

Thanks for the helpful summary, Ted. There is no "click of a button" way to do that, but it's not clear why one would want to in the first place. [...] Can't be accessibility of parameters at the hoc level--aliases take care of that. Can't be interoperability with hoc and the GUI. Is there some othe...
by Eric Thomson
Sun Jul 27, 2008 10:47 pm
Forum: Adding new mechanisms and functions to NEURON
Topic: Channel builder export?
Replies: 5
Views: 3084

Channel builder export?

I am a newbie to Neuron, presently using the book and Channel Builder Tutorial to try to figure out how to add my own mechanisms. My question is about how to get results from the channel builder into an NMODL file. In the web tutorial on Channel Builder, it says: A configured Channel Builder can be ...
by Eric Thomson
Sat Jul 05, 2008 6:28 pm
Forum: Getting started
Topic: Starting cellbuilder after opening cell with hoc file?
Replies: 1
Views: 1767

Starting cellbuilder after opening cell with hoc file?

I'm a tinkering beginner, and have just built the model cell example.hoc from Chapter 6, Listing 6.1 (with the 'access soma' line added in the topology specification section). Then, when I open CellBuilder, it seems to start anew with none of the topology etc from the hoc file. I take this to mean c...
by Eric Thomson
Fri Jun 27, 2008 11:32 pm
Forum: MSWin
Topic: Development Enviroments for Windows
Replies: 4
Views: 9848

Re: Development Enviroments for Windows

I like PSPad, but for one feature: when I type a left parenthesis, it automatically inserts a right-paren. That means I have to click the right arrow key to move past it before I hit return. I'd rather just type the parens myself and hit return. Does anyone know how to get rid of this trait in PSPad...
by Eric Thomson
Mon Jun 23, 2008 10:42 pm
Forum: NEURON Announcements
Topic: The NEURON Book: errata and discussion
Replies: 37
Views: 54090

Re: Suggested Correction

How about Table 1.1 on the top of page 4? Or is that too easily forgotten, when one is in the midst of all those procedural details that fill the subsequent pages? Working through it myself, I had the same question. Perhaps add '(see Table 1.2 for the other parameters)' as a reminder, either at the...
by Eric Thomson
Fri Mar 17, 2006 10:23 am
Forum: Getting started
Topic: first step in neuron
Replies: 8
Views: 13312

How can I activate this syntactic highlighter? I have saved NEURON.INI in the Syntax folder, but when I go to View-->Change Syntax, NEURON does not come up as an option. I haven't found any instructions in PSPad's help files. Added in Edit: Note for those who want to do this: the new .ini file appea...
by Eric Thomson
Sun Mar 05, 2006 2:28 pm
Forum: Getting started
Topic: Keep Lines in Space Plot: Only two lines plotted
Replies: 4
Views: 5688

Beautiful. Many thanks.
by Eric Thomson
Sat Mar 04, 2006 5:38 pm
Forum: Getting started
Topic: Keep Lines in Space Plot: Only two lines plotted
Replies: 4
Views: 5688

Keep Lines in Space Plot: Only two lines plotted

I have recently begun working through The Neuron Book. Great stuff! I am having a problem getting the space plot to show multiple lines. I am following the example given in Figure 1.36, but instead of multiple lines it is ploting only two lines: the initial state (resting potential along the neuraxi...