Add parameter values to a figure pdf

fig_annotate

import PyPDF2 as pdf

def fig_annotate(filename, params):
    '''
    Given a figure and a dictionary of values (like simulation parameter values) 
    associated with that figure, write in the "Keyword" metadata of the PDF the parameter list.
    
    When conducting numerical simulations involving large numbers of parameters, it 
    can be difficult and confusing to keep track of which parameters are associated with which
    figures. This function provides an additional check by allowing paramter values to be written directly 
    into the PDF file
    
    William Gilpin, 2015
    '''
    
    inpdf = pdf.PdfFileReader(filename)
    
    mypage = inpdf.getPage(0)
    outpdf = pdf.PdfFileWriter()
    outpdf.addPage(mypage)
    metadata_string = ''
    for item in params:
        metadata_string += str(item) + '='+str(params[item])
        metadata_string += '    '
    outpdf.addMetadata({'/Keywords': metadata_string})


    outputStream = open('intest.pdf', 'wb')
    outpdf.write(outputStream)
    outputStream.close()
    
    
# pvals = {'b':78, 'mg':0.03e-7}
# fig_annotate('intest.pdf', pvals)


def fig_get_annotations():
    '''
    Given a figure with annotations written into the "keyword" field 
    using the format of fig_annotate.py, read those parameter values 
    and return a parameter dictionary
    
    NOT YET IMPLEMENTED
    '''
    
    
    
    return None