fixed for #17, interactive plot show

CHANGES.rst

@@ -1,23 +1,27 @@
-1.3.5
------
+1.3.6 (unreleased)
+------------------
+- fixed matplotlib plotting issue, added explicit draw and interaction plots
+
+1.3.5 (released)
+----------------
 - Documentation-only updates corresponding to calwf3 3.4.1 release
 - travis sphinx install update for testing
 
-1.3.4
------
+1.3.4 (released)
+----------------
 - bugfix for input string to calwf3 executables
 
-1.3.3
------
+1.3.3 (released)
+----------------
 This release incorporates documentations changes for CALWF3 which will increase from v3.3 to v3.4 with the installation of HSTDP 2016.2 in the Space Telescope Data processing system. Included are:
 
 - updated information on CTE correction for subarray images
 - updated information on Sink pixel detection for subarray images
 - updated interaction with the Jupyter notebook when interacting with the calwf3 executables
 - improved logging and error return information from the kernel
 
-1.3.2
------
+1.3.2 (released)
+----------------
 - package reorganization
 - addition of output capture/logging to the calwf3 executables, help display text in jupyter notebook
 - moved the documentation to readthedocs and removed the local build, users will now be pointed to RTD from the display_help() function

wfc3tools/pstack.py

@@ -1,5 +1,4 @@
-from __future__ import division
-from __future__ import print_function
+from __future__ import division, print_function
 
 # get the auto update version
 from .version import __version_date__, __version__
@@ -8,11 +7,12 @@
 import os
 from astropy.io import fits
 import numpy as np
-import matplotlib.pyplot as plt
+from matplotlib import pyplot as plt
 from stsci.tools import teal
 
 __taskname__ = "pstack"
 
+plt.ion()
 
 def pstack(filename, column=0, row=0, extname="sci", units="counts",
            title=None, xlabel=None, ylabel=None, plot=True):
@@ -85,6 +85,7 @@ def pstack(filename, column=0, row=0, extname="sci", units="counts",
             plt.ylabel("Seconds")
 
         plt.plot(xaxis, yaxis, "+")
+        plt.draw()
 
     return xaxis, yaxis
 

wfc3tools/pstat.py

@@ -1,21 +1,21 @@
-from __future__ import division
-from __future__ import print_function
+from __future__ import division, print_function
 
 # get the auto update version
-from .version import __version_date__,__version__
+from .version import __version_date__, __version__
 
 # STDLIB
 import os
 from astropy.io import fits
 import numpy as np
-import matplotlib.pyplot as plt
+from matplotlib import pyplot as plt
 from scipy.stats import mode as mode
 
 # STSCI
 from stsci.tools import teal
 
 __taskname__ = "pstat"
 
+plt.ion()
 
 def pstat(filename, extname="sci", units="counts", stat="midpt", title=None,
           xlabel=None, ylabel=None, plot=True):
@@ -152,6 +152,7 @@ def pstat(filename, extname="sci", units="counts", stat="midpt", title=None,
                                                             xend, ystart, yend)
         plt.title(title)
         plt.plot(xaxis, yaxis, "+")
+        plt.draw()
 
     return xaxis, yaxis