ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Mon, 12 Oct 2020 21:46:24 +0200How to draw a graph in Sage and read GAP file added to the same projecthttps://ask.sagemath.org/question/53878/how-to-draw-a-graph-in-sage-and-read-gap-file-added-to-the-same-project/I have created a project in CoCalc with the kernel SageMath. There I have opened a new file (New1) and did some computations using the GAP commands, and "gap.eval" before each command enabled me to obtain the results successfully.
Question 1: Next by using some values obtained as a result of the GAP commands, if I need to plot a graph what is the command I will have to use, which will read GAP data successfully? (The output is in the form [[1,2],[1,3],[2,5],...], as an array)
Question 2: I have written another function(Program1) in GAP file and have uploaded it to the same Project. I would like to call this function to the file New1, where I have been working and use it. How can I call it succesfully?
I tried %run Program1.gap , but it didn't work.
The section of the program relevant to Question 2:
When I try to run the .gap file I get the below error,
%run UndirectedGeneratingSets.gap
File "/home/user/UndirectedGeneratingSets.gap", line 9
IsIrredundant := function(G,S)
^
SyntaxError: invalid syntax
I added gap.eval command to places where there are commands and updated the .gap file but still I am getting errors as below.
%run UndirectedGeneratingSetsedited.gap
File "/home/user/UndirectedGeneratingSetsedited.gap", line 12
gap.eval("return ForAll(S, s -> not(s in Subgroup(G, Filtered(S, t -> (t <> s)))));
^
SyntaxError: EOL while scanning string literal
I don't know why it says as syntax error. I have closed all the brackets in the code as below:
gap.eval("return ForAll(S, s -> not(s in Subgroup(G, Filtered(S, t -> (t <> s)))));
end;")
gap.eval("IrredGenSetsFromAvailable := function(G, GensRequired, GensAvailable)")
# return a list of the irredundant generating sets of G that contain the set GensRequired
# and are contained in the union of GensRequired and GensAvailable
# (It is assumed that GensRequired is irredundant)
local GenSets, i, S;
gap.eval("GenSets := [];") # GenSets is a list of the generating sets that have been constructed so far
gap.eval("if Subgroup(G, GensRequired) = G then
# do not add any additional generators
return [AsSortedList(GensRequired)];
else
# for each available generator, recursively find all irredundant generating sets
# that can be obtained by adding it (and perhaps later elements of GensAvailable)
# to GensRequired
for i in [1..Length(GensAvailable)] do
S := Concatenation(GensRequired, [GensAvailable[i]]);
if IsIrredundant(G,S) then
Append(GenSets, IrredGenSetsFromAvailable(G, S,
GensAvailable{[i+1 .. Length(GensAvailable)]}));
fi;
od;
fi;
return GenSets;
end;")
and similarly for the rest of the codes in that program as well.
Many many thanks in advance.BuddhiangMon, 12 Oct 2020 21:46:24 +0200https://ask.sagemath.org/question/53878/