The discussion focuses on the challenge of drawing tangents from the point of inflection on a peak in a chromatogram using tools like Qtiplot and Excel. Participants clarify that inflection points typically do not occur at peaks, suggesting a misunderstanding of the assignment's requirements. One user recommends adding another data series in Excel to create the desired tangent line. The conversation emphasizes the importance of accurately interpreting assignment instructions for effective data visualization.
PREREQUISITESThis discussion is beneficial for students and professionals in analytical chemistry, data analysts, and anyone involved in data visualization using Excel or Qtiplot, particularly in the context of chromatographic data interpretation.
Can't you just print out the plot of the curve, and then manually draw in the tangent line?selseg said:Hi , I have an assignment which requires that I draw tangents from the point of inflection on a peak to the x-axis.I still cannot figure out how to do that using qtiplot or excel.
I'm having a bit of a problem with the phrase "the point of inflection on a peak". Except for things like square waves, inflection points don't happen on peaks.selseg said:Hi , I have an assignment which requires that I draw tangents from the point of inflection on a peak to the x-axis.I still cannot figure out how to do that using qtiplot or excel.
Its a chromatogram.Scott said:I'm having a bit of a problem with the phrase "the point of inflection on a peak". Except for things like square waves, inflection points don't happen on peaks.
Are you quoting the assignment precisely?