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I`ve read all the manuals and still couln`t find what is the difference between the stacked and side-by-side barplots ? Could you explain me ? [[alternative HTML version deleted]]

It is a trivial problem, but in the book I couln`t figure out how to put different colours at different regression lines plot(bif,abund,type="n", xlab= "number_bifurcations", ylab="abundances") sbif<-split(bif,stage) sabund<-split(abund,stage) points(sabund[[2]],sbif[[2]],pch=16, col="red") for(i in...

I am looking at getting a new Thinkpad with an i5 processor. I was curious to what extent this would speed up developing a Ruby on Rails app. I am guessing that this depends to what extent multi-threading is utilized, but I am not sure---hence the question :^) If it is not that significant, my other choice would be to get a used Thinkpad or Mac Pro, duo-core. So is there a significant

...at is supposed to create tables called "bottom", "top", "left" and "right". Since "bottom" and "top" work just fine, my hunch is that in the SQL the "left" is mistaken for some join statement like "LEFT INNER JOIN". Couln''t one consider that a Rails bug? Shouldn''t Rails be able to escape names that match SQL keywords? Or is it in fact not possible to create tables named like that? And is there any way work around this? Ingo Weiss -- Posted via http://www.ruby-forum.com/.

Hi, I currently write a tool for my school. Therefore I have to save uploaded files. I bought Agile Web Dev. with Rails to learn webdev with Rails. I''m very new at rails and couln''d find anything on the internet. Now when I want to save the file data to the mysql database, rails gives me an error. My code is the same as written in the book on page 363. Here is my code of the model: class Document < ActiveRecord::Base has_many :comments def file=(file_...

Hi! I want to compile samba version 3.0.25 client not server. I couln¡¯t cofigure makefile on uClinux. Someone help me. How to configure samba makefile on uClinux? ¡°[root]# ./configure --host=arm-elf CC=arm-elf-gcc Checking that the C compiler understands negative enum values¡¦ configure: error: cannot run test program while cross compliling. What co...

Hi! I''m converting my Rails 3.1 app from cookie sessions to database sessions. I''ve added an extra column on the sessions table to save the user_id. I read the documentation in http://apidock.com/rails/v3.1.0/ActiveRecord/SessionStore and googled but can''t seem to find a way to set the session''s user_id that works. Can someone help? Thanks -- Posted via

Hi, Running: Ruby 1.8.7 p72, RSpec 1.1.12 and rcov 0.8.1.2.0, I get the following error message with $ rake spec:rcov -- /usr/local/ruby1.8.7//lib/ruby/1.8/rexml/formatters/pretty.rb:131:in `[]'': no implicit conversion from nil to integer (TypeError) from /usr/local/ruby1.8.7//lib/ruby/1.8/rexml/formatters/pretty.rb:131:in `wrap'' from

...ls.rubyforge.org/tutorial/index.html I followed the suggestions and encountered 3 problems so far. 1. Couldn''t start the Apache server. Error message "Port 80 was used by some other process." I over-came the problem by going into configuration and change the port to 4001. 2. I couln''t connect to my localhost using the MySQL-Front. I overcame the problem by following the explanation in one website and run RegEdit and changed some setting in the Windows Registration. 3. I copied and pasted the codes for edit.rhtml, and run the example and found that text boxes were...

...vremove /dev/vg0/snap1 not removed! it says can''t allocated memory #xm mem-set 0 512 #lvremove /dev/vg0/snap1 now it removed successfully #lvcreate -L4096M -n fedora1 vg0 System lockup at this point. I have to login from another terminal. I couldn''t kill the lvcreate process, couln''t do anything lvm. I have to reboot the machine. My vg0 is on /dev/md1, which is a software raid 1. My dom0 os is fedora core 4. Xen version is 3.0-testing So what causes this? What''s my work around I can use to do lvm snapshot. Wensheng ___________________________________...

Hi there! Some questions I couldn''t find an answer for: IPtables: - Is it possible to filter those ACK-packets (to eleminate problems with ADSL-connections) with IPtables? It wasn''t possible with IPchains, so u32 had to be used. Now there is this nice little --tcp-flags option. But I just don''t know if this is all I need. The u32 was checking for packetsize too. So if