Peculiarities in demo plots

[Daniel J S. <dan...@ie...>]

I stepped through the demos to see what is new and test whether a change 
I made affected anything.  Below is a list of items that seem like 
bugs/flaws compared to what I recall of the demos from years ago.  I 
haven't investigated any of these issues.  Should we break these up into 
bug reports somehow?

Dan


random.dem:
   (Clarification, this is only for Qt, x11 looks as I remember)
   Lattice test for random numbers: blank (or points are single pixel 
which I can't see amongst the dust on my monitor)
   Lattice test for random numbers: blank
   Gaussian 3D cloud of 3000 random samples: blank

scatter.dem:
Hit return to continue (5)
          "scatter.dem", line 45: warning: Cannot contour non grid data. 
Please use "set dgrid3d".

pm3d.dem:
   (Let me clarify the following: all of these cases are for the Qt 
terminal,
    the x11 terminal has the file name front-most in the plot)
   Datafile with different nb of points in scans; pm3d flush begin: file 
name is behind the plot element (reads 'gle.dat')
   Datafile with different nb of points in scans; pm3d flush center: 
file name is behind the plot element (reads 'dat')
   Datafile with different nb of points in scans; pm3d flush scans: file 
name is obscured by the plot element
   Datafile with different nb of points in scans; pm3d ftriangles flush 
begin: file name is obscured by the plot element
   Datafile with different nb of points in scans; pm3d ftriangles flush 
center: file name is obscured by the plot element
   Datafile with different nb of points in scans; pm3d ftriangles flush 
end: file name is obscured by the plot element
   Using interpolate with datafile; pm3d map interpolate 2,1: file name 
is behind the plot element (reads 'gle.dat')
   Using interpolate with datafile; pm3d map ftriangles interpolate 
10,1: name is obscured by the plot element
   color lines: 'splot sin(y)/(y) with lines palette': The color bar 
text goes off the window screen.  I see that quite often and don't 
recall this from years back...maybe font is bigger

heatmaps.dem
   Heat Map generated from a file containing Z values only: blank, color 
bar correct (this is only for Qt terminal, x11 looks good)
   Compare 'image' and 'image pixels' mode: On my system, there are 
white spaces between pixels (this is only for Qt terminal, x11 looks 
good, I think I've encountered this before as a graphics driver 
implementation of OpenGL (Mesa) issue)

hypertext.dem
   Sweet!
   While the Qt terminal has yellow filled circle with slightly darker 
yellow/brown outline, the x11 terminal has yellow filled circles with 
black outline and a black dot at the center of each circle (not the best 
looking circle either, but that's x11's problem, I guess).

Image Formats
   As with 3d color surfaces, a color box may be added to the plot: 
blank, color box goes off edge of screen  (Appears to be Qt only)
   Matrix binary data (gnuplot binary) translated: the box around the 
key extends so far to the left, wish that font-size issue could be fixed 
somehow

   The two images after "End of image demo...": can't see key amongst 
black background

   Same thing in 3D mode (First column contains various odd values): 
blank and only two borders visible
   3D image with pixel value in 4th column: blank and only two borders 
visible

ellipses_style.dem
   Four-column form: x y major_diameter: The _d of two "diameter"s is 
treated as subscript and doesn't read easily
   Five-column form:  The _d of two "diameter"s is treated as subscript 
and doesn't read easily

key.dem
   Key (<manual> vert left top): The plot border appears to be the 
top-most element, while all other plot elements appear behind the key. 
I don't recall this from the past.

rectangle.dem
   There are the following differences between Qt temrinal and x11 terminal:
   Qt: The rectangle labeled "There should be a clipped rectangle here" 
has a white fill background
   x11: The said rectangle has no white fill, just the biege of the plot 
showing through
   Qt: The hashmark fill pattern box from (2,-3) to (0,-2) has no 
background (biege shows through)
   x11: Said pattern box has a white fill background showing through the 
hash pattern