Re: IPE7: select all objects which contain a certain code in XML?

On 11/23/2011 09:09 PM, elwood151 wrote:
> (I have imported graphs of functions from another application as PDF and I
> want to format them in a consistent way:
> example: all have normal dash style ay\nd pen, but different colors.
> To display them unambigously in greyscale, the blue line shall e. g. be
> dotted and the red one shall have a different dash style and pen, etc...

It seems to me that you could save a lot of time by automating the 
process, instead of doing it manually inside Ipe.  Attached is a small 
Ipe script that changes the stroke and dash style of all objects with a 
given stroke color - you could adapt this to your needs (and also 
recognize several cases in one pass).

Cheers,
  Otfried

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-- convert1.lua
-- For all objects with stroke = "0.188 0.49 0.949",
-- change stroke to black and dashstyle to dashed

if #argv ~= 2 then
  io.stderr:write("Usage: ipescript convert1 <inputfile> <outputfile>\n")
  return
end

inname = argv[1]
outname = argv[2]

doc = assert(ipe.Document(inname))

-- run Latex for saving later
assert(doc:runLatex())

for i,p in doc:pages() do
  for j = 1,#p do
    local obj = p[j]
    local s = obj:get("stroke")
    if s.r == 0.188 and s.g == 0.49 and s.b == 0.949 then
      obj:set("stroke", "black")
      obj:set("dashstyle", "dashed")
    end
  end
end
doc:save(outname)