[GSAS-II] BUG report (and some fixes)

[Ivo Alxneit]

Dear all

First line is omitted in plots of sequential results. In the attached
'test.gpx' only one data point is plotted (line 2). Exports are correct,
however.

In addition I have attached a patch that fixes three typos in
GSASIIscriptable:

- add missing definition for npsind
- use correct names for images read (please verify)
- use correct keyword in function call

pylint still reports the following undefined variables/arguments that I
could not fix as I do not understand the code too well:

E1120:2768,8: G2PwdrData.fit_fixed_points: No value for argument
'fixback' in function call
E0602:3063,23: G2PwdrData.LoadProfile: Undefined variable 'bank'
E0602:3975,28: G2Image.Integrate: Undefined variable 'Controls'
E0602:3978,34: G2Image.Integrate: Undefined variable 'waves'
E0602:4025,36: G2Image.Integrate: Undefined variable 'G2pdG'
E0602:4031,36: G2Image.Integrate: Undefined variable 'G2pdG'

My config (on linux)

$ GSAS-II binary directory:
/fast_home/alxneit/miniconda3/envs/gsas/GSASII/bin
7 values read from config file /home/alxneit/.G2local/config.py
Python module versions loaded:
  Python:     3.7.3
  wx:         4.0.4
  matplotlib: 3.0.3
  numpy:      1.16.3
  scipy:      1.2.1
  OpenGL:     3.1.1a1
  PIL.Image:  6.0.0
  Platform:   linux 64bit x86_64
This is GSAS-II revision 3942

gruss / nice weekend
-- 
Dr. Ivo Alxneit
Catalysis for Energy Group
Bioenergy and Catalysis Laboratory        phone: +41 56 310 4092
Paul Scherrer Institute                     fax: +41 56 310 2688
CH-5232 Villigen                      gnupg key: 0x515E30C7
Switzerland
https://www.psi.ch/ceg/
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--- /fast_home/alxneit/miniconda3/envs/gsas/GSASII/GSASIIscriptable.py.old	2019-05-03 13:57:14.449904027 +0200
+++ /fast_home/alxneit/miniconda3/envs/gsas/GSASII/GSASIIscriptable.py	2019-05-03 14:51:59.497329406 +0200
@@ -752,6 +752,7 @@
 '''Readers by reader type'''
 exportersByExtension = {}
 '''Specifies the list of extensions that are supported for Powder data export'''
+npsind = lambda x: np.sin(x*np.pi/180.)
 
 npsind = lambda x: np.sin(x*np.pi/180.)
 def LoadG2fil():
@@ -1366,7 +1367,7 @@
             formatName = dImgObj.data['Image Controls'].get('formatName','')
             imagefile = dImgObj.data['data'][1]
             ImageTag = None # fix this for multiimage files
-            darkImg = G2fil.RereadImageData(ImageReaderlist,imagefile,ImageTag=ImageTag,FormatName=formatName)
+            darkImage = G2fil.RereadImageData(ImageReaderlist,imagefile,ImageTag=ImageTag,FormatName=formatName)
             if darkImg is None:
                 raise Exception('Error reading dark image {}'.format(imagefile))
             sumImg += np.array(darkImage*darkScale,dtype='int32')
@@ -1377,7 +1378,7 @@
             formatName = bImgObj.data['Image Controls'].get('formatName','')
             imagefile = bImgObj.data['data'][1]
             ImageTag = None # fix this for multiimage files
-            backImg = G2fil.RereadImageData(ImageReaderlist,imagefile,ImageTag=ImageTag,FormatName=formatName)
+            backImage = G2fil.RereadImageData(ImageReaderlist,imagefile,ImageTag=ImageTag,FormatName=formatName)
             if backImage is None:
                 raise Exception('Error reading background image {}'.format(imagefile))
             if darkImg:
@@ -4083,7 +4084,7 @@
                         associated with all histograms given.
 
     """
-    proj = G2Project(gpxname=args.filename)
+    proj = G2Project(gpxfile=args.filename)
 
     hist_objs = []
     if args.histograms:
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