matplotlib-checkins Mailing List for matplotlib (Page 110)

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Revision: 6262
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6262&view=rev
Author:   fer_perez
Date:     2008-10-19 06:58:58 +0000 (Sun, 19 Oct 2008)

Log Message:
-----------
Workbook: complete updates to build.

Final round of fixes and updates for workbook to build correctly.
Added missing files, updated Makefile.

Modified Paths:
--------------
    trunk/py4science/workbook/Makefile
    trunk/py4science/workbook/update_problems.py

Added Paths:
-----------
    trunk/py4science/workbook/bessel.tex

Removed Paths:
-------------
    trunk/py4science/workbook/problems_solved

Modified: trunk/py4science/workbook/Makefile
===================================================================

--- trunk/py4science/workbook/Makefile	2008-10-19 04:21:03 UTC (rev 6261)
+++ trunk/py4science/workbook/Makefile	2008-10-19 06:58:58 UTC (rev 6262)
@@ -18,21 +18,25 @@
 # convenience shorthand for targets
 sol: workbook_solutions.pdf
 skel: workbook_skeletons.pdf
-all: soln skel
+all: sol skel
 
 # actual targets
-workbook_solutions.pdf: $(SOLN_SRC)
-	./update_problems.py
-	rm -f problems
-	ln -sf problems_soln problems
+workbook_solutions.pdf: prob_soln $(SOLN_SRC)
 	$(PDFTEX) workbook_solutions
 	$(PDFTEX) workbook_solutions
 
-workbook_skeletons.pdf: $(SKEL_SRC)
+workbook_skeletons.pdf: prob_skel $(SKEL_SRC)
+	$(PDFTEX) workbook_skeletons
+
+prob_soln:
+	rm -f problems
+	ln -sf problems_soln problems
 	./update_problems.py
+
+prob_skel:
 	rm -f problems
 	ln -sf problems_skel problems
-	$(PDFTEX) workbook_skeletons
+	./update_problems.py
 
 workbook_skeletons.tex:
 	ln -sf main.tex workbook_skeletons.tex
@@ -56,4 +60,4 @@
 	$(FASTPDFTEX) $<
 
 # Phony targets
-.PHONY: all clean
+.PHONY: all clean prob_soln prob_skel sol skel

Added: trunk/py4science/workbook/bessel.tex
===================================================================
--- trunk/py4science/workbook/bessel.tex	                        (rev 0)
+++ trunk/py4science/workbook/bessel.tex	2008-10-19 06:58:58 UTC (rev 6262)
@@ -0,0 +1,46 @@
+\section{Bessel functions}
+\label{sec:bessel}
+
+In this exercise, you will verify a few simple relations involving the Bessel
+functions of the first kind.  The important relations to keep in mind are the
+asymptotic form of $J_n(x)$ for $x>>n$:
+
+\begin{equation}
+J_n(x) \approx \sqrt(\frac{2}{\pi x})\cos(x-(n\frac{\pi}{2}+\frac{\pi}{4}))
+\end{equation}
+
+%
+and the recursion relation
+
+\begin{equation}
+J_{n+1}(x) = \frac{2n}{x} J_n(x)-J_{n-1}(x)
+\end{equation}
+
+\begin{figure}
+\begin{centering}
+\includegraphics[width=5in]{fig/bessel_functions}
+\par
+\end{centering}
+
+
+\caption{\label{fig:bessel_functions}A few Bessel functions.}
+
+\end{figure}
+
+
+
+\begin{figure}
+\begin{centering}
+\includegraphics[width=5in]{fig/bessel_error}
+\par
+\end{centering}
+
+
+\caption{\label{fig:bessel_error}Numerical error for $J_5$.}
+
+\end{figure}
+
+Once you get the code to run, you should see two figures like
+Figure~\ref{fig:bessel_functions} and Figure~\ref{fig:bessel_error}.
+
+\lstinputlisting[label={code:bessel},caption={IGNORED}]{problems/bessel.py}

Deleted: trunk/py4science/workbook/problems_solved
===================================================================
--- trunk/py4science/workbook/problems_solved	2008-10-19 04:21:03 UTC (rev 6261)
+++ trunk/py4science/workbook/problems_solved	2008-10-19 06:58:58 UTC (rev 6262)
@@ -1 +0,0 @@
-link ../examples
\ No newline at end of file

Modified: trunk/py4science/workbook/update_problems.py
===================================================================
--- trunk/py4science/workbook/update_problems.py	2008-10-19 04:21:03 UTC (rev 6261)
+++ trunk/py4science/workbook/update_problems.py	2008-10-19 06:58:58 UTC (rev 6262)
@@ -12,11 +12,11 @@
 # Constants
 SRC_DIR = '../examples'
 UPDATE = './mkskel.py'
+PROBLEMS_DIR = 'problems'
 
-
 if __name__ == '__main__':
     
-    problems = [f for f in os.listdir('problems') if f.endswith('.py')]
+    problems = [f for f in os.listdir(PROBLEMS_DIR) if f.endswith('.py')]
 
     os.chdir(SRC_DIR)
     to_update = []


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