Hi,
I believe you are using AddOption correct, but not the correct option. Option
“C” does not turn off explicit hydrogens it turns off terminal C with hydrogens
(i.e. CH3 groups). If your molecule has explicit hydrogens, you should remove
them before creating the SVG (or in your example code, don’t add them…)
Kind regards,
Fredrik
On 5 maj 2017 19:46 +0200, xh s <sxh....@gmail.com>, wrote:
> Hi,
>
> I'd like to output my molecules to svg with some options (e.g. implicit
> hydrogen). Here's a minimal example code:
>
> #include <openbabel/obconversion.h>
> #include <openbabel/mol.h>
> #include <iostream>
> using namespace std;
> using namespace OpenBabel;
>
> int main() {
> stringstream inputSmiles("CCC(CC)C");
> ofstream pic("minimal_conversion_pic.svg");
> OBConversion conv(&inputSmiles, &pic);
> conv.SetInAndOutFormats("can", "svg");
> OBMol mol;
> conv.Read(&mol);
> mol.AddHydrogens();
> conv.AddOption("C",OBConversion::OUTOPTIONS);
> conv.Write(&mol);
> }
>
>
> I believe "C" is an option to turn off explicit hydrogen in svg drawing.
> However this program still prints hydrogens. I tried other options too but
> none of them worked. Am I using AddOption wrong?
>
> Thank you,
> Xianghai
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