Boost path issues

[ayushkothari27]

Hello @falvaro

I have downloaded the boost libraries from https://dl.bintray.com/boostorg/release/1.73.0/source/ (boost_1_73_0.7z)

After that, I have set the path as "FLAGS = -O3 -Wno-unused-result -I/boost_1_73_0/boost/"

Then I try to build using make and I get a lot of errors. I have posted one error.

rnnlib4seshat/Helpers.hpp:578:54: error: cannot convert ‘std::pair<boost::iterators::zip_iterator<std::tuple<double*, double*, double*> >, boost::iterators::zip_iterator<std::tuple<double*, double*, double*> > >’ to ‘int’ in return
boost::end(r3) - (boost::size(r3) - size))));
^
Makefile:65: recipe for target 'symfeatures.o' failed
make: *** [symfeatures.o] Error 1

What seems to be the issue in this case?

Thanks.

[ayushkothari27]

Using "FLAGS = -O3 -Wno-unused-result -I/boost_1_73_0/" also gave the same errors.

[Narsil]

This repo is 6 years old, boost was update quite a bit, event C++11 will make this code not compile.

You can check out my fork I updated it with more recent library compat. https://github.com/Narsil/seshat

Cheers.

[ayushkothari27]

@Narsil Hey thanks. I will check out your fork and let you know. Thanks.

[ayushkothari27]

Hey @Narsil
Tried your code got this error

g++ -c online.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c featureson.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c symfeatures.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c symrec.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c production.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c gparser.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c grammar.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c hypothesis.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c cellcyk.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c tablecyk.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c stroke.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
g++ -c sample.cc -O3 -Wno-unused-result -fpermissive -I/boost_1_73_0/boost/
sample.cc:31:10: fatal error: xercesc/util/PlatformUtils.hpp: No such file or directory
 #include <xercesc/util/PlatformUtils.hpp>
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Makefile:32: recipe for target 'sample.o' failed
make: *** [sample.o] Error 1

[Narsil]

You're missing libxerces
If on Ubuntu. Sudo apt install libxerces-dev or something like that...

[ayushkothari27]

Hey @Narsil
Thanks that worked, I was able to build.

Now when I try running on a jpg/png image it gives me an Error: input file format is not SCG_INK

Tried #10 but it gave the same error.

The following issue has also been tagged in #17 and #25

[Narsil]

Yes, well you don't feed png/jpeg images to this algorithm, but SCG_INK format.

You can have the spec with a little google: https://www.scg.uwaterloo.ca/mathbrush/publications/corpus.pdf
And you have an example right in the repo (if you read the README the command should have hinted it): https://github.com/falvaro/seshat/blob/master/SampleMathExps/exp.scgink

It's important because strokes contain more information than raw picture (a vertical line can be either an upward stroke or a downward stroke, and that can change an algorithm's decision for maths). If you have only images at hand, then you can use other algorithms to get back a stroke path, but that's another problem that is not contained is this repo's code.

[ayushkothari27]

Thanks @Narsil

Appreciate your help.

[FireCubeStudios]

does this work for windows?