SVGGraph 2.12
Published
The new version of SVGGraph doesn't contain any really big changes, but it does have several new options for how the graphs should look. I've tried to illustrate most of the new options on the example graph below.
Unless you are profoundly colour-blind, the most obvious new feature on this
graph should be the addition of green stripes - this is enabled with the
grid_back_stripe option and the colour can be set using
grid_back_stripe_colour. The stripes are drawn from the major grid
lines on the Y-axis.
The next change is on the Y-axis, where it is using a logarithmic scale. This is
enabled with the log_axis_y option, and the base for the logarithm
can be set using log_axis_y_base. I've added some extra documentation
about using the log scale on the axis
and grid options page.
Next we have some new options for setting individual axis text styles:
axis_font_h, axis_font_v, axis_font_size_h,
axis_font_size_v, axis_font_adjust_h,
axis_font_adjust_v, axis_text_colour_h,
axis_text_colour_v, axis_text_space_h and
axis_text_space_v. On the example graph I've used
axis_font_h = 'Arial Black', axis_font_size_h = 12 and
axis_text_colour_h = '#339'.
The example graph also shows the new units_x and units_y
options in use. units_x has been set to “s” and
units_y to “m” to append these units to the axis labels.
The Y axis also demonstrates the last of the new options that appear on the
graph - decimal has been set to “,” and thousands
to “ ” (a space character) to change the default number formatting
from a “.” for the decimal point and “,” for the thousands
separator.
There are two new pie graph options that I didn't manage to demonstrate on the
line graph above - show_label_key defaults to true to
show the slice index or name (it was always displayed in earlier versions) and
label_percent_decimals allows you to set the number of decimal
places displayed for the percentage in the label.
The last new option is empty_use, which defaults to true.
This makes SVGGraph output <use> elements as empty elements
(<use ...></use>) instead of self-closed elements
(<use .../>). The reason for this option is that Safari 6
uses a buggy version of WebKit that doesn't handle the self-closed elements
properly. Using an empty element instead shouldn't cause any problems, but the
option is there to disable it.
There are a couple of bugs fixed in this version too. The structure
option now takes precedence over the scatter_2d option, and 3D pie
charts will automatically adjust their size if the depth option is
greater than the space available to draw the graph in.
The updated zip files are available from the downloads page.