GlobalProperty — to customize the objects appearance (curves, surfaces...) in a plot or surf command.
The GlobalProperty is an optional argument that can be used inside a plot or surf command. It allows a global customization of all the new plotted lines (respectivly surfaces). It has to be given as a couple {PropertyName, PropertyValue}. Several couples can be set at the same time in a plot or surf call.
PropertyName must be a string defining the property to set.The PropertyValue can be a real, integer or string (scalar or matrix) depending on the type of property used. For example, to specify a red (color) longdash-dot (line style) with diamond marker (marker), the sequence should be : 'Colo','red','LineSt','-.','Marker','diam'.
As you can see, a full complete spelling of each property name and value is not required but those arguments, specified in any order, must remain unambiguous. Furthermore, the string specification is not case sensitive. GlobalProperty is predominant on all LineSpec previously stated.
Here is a complete list of the PropertyName you can
specify (using plot or surf) and their available
associated PropertyValue. If not specified, those properties
are available for both Polyline and Fac3d
objects (created respectivly by plot or surf) and, as previously said,
they are applied to the new created objects (lines or surfaces).
Sometimes, you may have two PropertyName correponding to one property :
the first one is the equivalent default Matlab name, the second is the
default name used by Scilab (i.e.: Color or Foreground for a
line, see below).
a real matrix specifiying the color at every points defined by
Z matrix. This property is linked to the object's
data.color property (see
surface_properties). Note that this property is available
for surfaces only.
a string with value 'scaled' or
'direct'. If a data.color is set, each index
color data specifies a single value for each vertex.
cdata_mapping determines wether those indices are scaled
to map linearly into the current colormap ('scaled' mode)
or point directly into this colormap ('direct' mode).
This property is usefull when color_flag equals
2,3 or 4. Note that this
property exists only with Fac3d entities. Note also that
plot3d has 'direct' mode by default and
surf has 'scaled' mode by default.
a string "on" or "off" defining the
clipping mode ("on" by default). It is equivalent to the
clip_state property. This field contains the
visible property (see polyline_properties).
Note that this property is not yet available for surface
entities.
a string defining a known color (see color_list) or a
1x3 (or 3x1) RGB
vector defining a color number. Color number is given as a 3-uple
R, G, B corresponding
respectively to red, green and blue intensity between 0 and 1. This
property is linked to the object's foreground property
(see polyline_properties). Warning : Color is not available for surfaces objects. The
Foreground property exists for surfaces objects but is
linked to the Matlab EdgeColor property (see
surface_properties).
a string defining a known color (see color_list) or a
1x3 (or 3x1) RGB
vector defining a color number. Color number is given as a 3-uple
R, G, B corresponding
respectively to red, green and blue intensity between 0 and 1. This
property is linked to the surface foreground property
(see surface_properties). Warning : For polyline objects, the Foreground property
exists with a different meaning (see above) and EdgeColor
does not exist at all.
a string with value 'none', 'flat' or
'interp' specifying the way the facet's color are
rendered. When 'none' is selected, a mesh of the surface
is drawn; if 'flat' (deault mode) is set, the
Fac3d color.data values determine one color
per facet using the color of the first vertex of the facet. If the
value is 'interp', an interpolated shading is done on the
surface using color.data to determine a color at each
vertex of each facet.
This property value should be a string defining a line style. This
property is linked to tje object's line_style property
(see polyline_properties or
surface_properties).
Specifier
|
Line Style
|
-
|
Solid line (default) |
--
|
Dashed line |
:
|
Dotted line |
-.
|
Dash-dotted line |
none
|
No line |
A string defining the marker type. Note that if you specify a
marker wihtout a line style, both line (with default solid mode
enabled) and marker are drawn.This property is linked to the object's
mark_style and mark_mode properties (see
polyline_properties or
surface_properties).
Specifier
|
Marker Type
|
+
|
Plus sign |
o
|
Circle |
*
|
Asterisk |
.
|
Point |
x
|
Cross |
'square' or
's' |
Square |
'diamond' or
'd' |
Diamond |
^
|
Upward-pointing triangle |
v
|
Downward-pointing triangle |
>
|
Right-pointing triangle |
<
|
Left-pointing triangle |
'pentagram'
|
Five-pointed star (pentagram) |
'none'
|
No marker (default) |
a string defining a known color (see color_list) or a
1x3 (or 3x1) RGB
vector defining a color number. Color number is given as a 3-uple
R, G, B corresponding
respectively to red, green and blue intensity between 0 and 1. This
property is linked to the object's mark_foreground
property (see polyline_properties or
surface_properties).
a string defining a known color (see color_list) or a
1x3 (or 3x1) RGB
vector defining a color number. Color number is given as a 3-uple
R, G, B corresponding
respectively to red, green and blue intensity between 0 and 1. This
property is linked to the object's mark_background
property (see polyline_properties or
surface_properties).
a scalar defining the marker size in point unit. This
property is linked to the object's mark_size property
with mark_size_unit enabled to "point" (see
polyline_properties or
surface_properties).
a string "on" or "off" defining the
visibility mode ("on" by default). This property is
linked to the object's visible property (see
polyline_properties or
surface_properties).
a real vector or matrix (re-)defining the given data for all the
plotted lines or surfaces. Concerning dimensions, note that this new
data must match all the previous specified X data : that
is to say all those data matrices must be of the same dimensions. This
property is linked to the object's data.x property (see
polyline_properties or
surface_properties).
a real vector or matrix (re-)defining the given data for all the
plotted lines or surfaces. Concerning dimensions, note that this new
data must match all the previous specified Y data : that
is to say all those data matrices must be of the same dimensions. This
property is linked to the object's data.y property (see
polyline_properties or
surface_properties).
when used with plot, a real vector or matrix adding
a
Z data for all the plotted lines ; with
surf, a real matrix (re-)defining the given data for all
the surfaces. Concerning dimensions, note that this new data must
match all the previous specified X and Y
data. This property is linked to the object's data.z
property (see polyline_properties or
surface_properties).
// --------------------
// With the plot command :
// --------------------
x=1:10; // Init.
plot(x,sin(x),'colo','red','linest','-.','marker','>','markeredg','cyan','markerFace','yellow','markersize',5)
clf();
// combinations' order in {PropertyName,PropertyValue} does not matter
plot(x,sin(x),'marker','p','markerfac','cyan','markersiz',10)
clf();
// combination of LineSpec and GlobalProperty shows the GlobalProperty predominance
plot(x,x.*x,'*cya--','color','gr','linestyle','-','marker','sq','markersize',6,'markforegroun','red','markbackgro',[0.2 0.5 0.6])
clf();
//multiple plots with different LineSpecs and finally some global GlobalProperty
clf();
t=0:%pi/20:2*%pi;
plot(t,sin(t),'ro-.',t,cos(t),'cya+',t,abs(sin(t)),'--mo','markstyl','diam')
// --------------------
// With the plot2d command :
// --------------------
function draw_marks(title)
a=gca();
a.title.text=title;
a.mark_size=8;
a.data_bounds=[-1.5 1.5 -1.5 1.5];
theta=(1/15)*(2*%pi)*[0:15];
plot2d(cos(theta),sin(theta));
for i=0:14 do
theta=(i/15)*(2*%pi);
plot2d(cos(theta),sin(theta),style=-i);
end
endfunction
clf();
subplot(2,2,1)
draw_marks("black foreground / white background")
subplot(2,2,2)
a=gca();
a.mark_foreground=-1;
a.mark_background=4;
draw_marks("black foreground / cyan background")
subplot(2,2,3)
a=gca();
a.mark_background=0;
draw_marks("black foreground / invisible background")
subplot(2,2,4)
a=gca();
a.mark_foreground=0;
a.mark_background=4;
draw_marks("invisible foreground / cyan background")
// --------------------
// With the surf command :
// --------------------
Z= [ 0.0001 0.0013 0.0053 -0.0299 -0.1809 -0.2465 -0.1100 -0.0168 -0.0008 -0.0000
0.0005 0.0089 0.0259 -0.3673 -1.8670 -2.4736 -1.0866 -0.1602 -0.0067 0.0000
0.0004 0.0214 0.1739 -0.3147 -4.0919 -6.4101 -2.7589 -0.2779 0.0131 0.0020
-0.0088 -0.0871 0.0364 1.8559 1.4995 -2.2171 -0.2729 0.8368 0.2016 0.0130
-0.0308 -0.4313 -1.7334 -0.1148 3.0731 0.4444 2.6145 2.4410 0.4877 0.0301
-0.0336 -0.4990 -2.3552 -2.1722 0.8856 -0.0531 2.6416 2.4064 0.4771 0.0294
-0.0137 -0.1967 -0.8083 0.2289 3.3983 3.1955 2.4338 1.2129 0.2108 0.0125
-0.0014 -0.0017 0.3189 2.7414 7.1622 7.1361 3.1242 0.6633 0.0674 0.0030
0.0002 0.0104 0.1733 1.0852 2.6741 2.6725 1.1119 0.1973 0.0152 0.0005
0.0000 0.0012 0.0183 0.1099 0.2684 0.2683 0.1107 0.0190 0.0014 0.0000];
clf();
f=gcf();
f.figure_size = [610,724];
subplot(211)
surf(Z,'facecol','interp','ydat',101:110,'edgecol','mage')
subplot(212)
surf(Z,'edgeco','b','marker','d','markersiz',9,'markerfac','k','xdata',-50:-41)