I need a method to calculate the angle of a tangent to a data curve - ideally in Excel or QT / C ++

For a project I need a method to calculate the tangent to a data curve.

The enclosed excel sheet shows you the nature of our data.

There is a time row, providing one data point every 2.5 sec.

The corresponding data points are shown in row "data".

The tangent shall be calculated between the data point, where the data exceeds 2 mm to the outer surface of the curve (see enclosed screen shot - the tangent is the red line).

What we need is the angle of this tangent vs. the x axis, assuming the data is printed as follows

- with the y axis representing 10 mm = 10 data points of the row "data".

- with the x axis representing 10 mm = 300 sec

What I want from you (deliverables):

a) an explanation how you would mathematically calculate this angle (the method how you would do this)

b) the calculation for my example in excel or in QT / C ++ (or another method, but please specify in your bid)

Please do not bid for the project if you do not understand the task and if you do not believe to be able to achieve this aim without much additional information from me.

We will only pay if you can fulfill both deliverables.

Beceriler: Algoritma, C Programlama, C# Programlama, C++ Programlama, Excel

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İşveren Hakkında:
( 39 değerlendirme ) Munich, Germany

Proje NO: #15943401



I can do this easily by using numerical derivatives technique for each of your data point Stay tuned, I'm still working on this proposal.

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(1 Yorum)

Bu iş için 14 freelancer ortalamada €152 teklif veriyor


I can help you. I'm interested in your project. I've an experience of works like yours. Ping me any time. Stay tuned, I'm still working on this proposal.

in %bids___i_period_sub_35% gün içinde222%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(49 Değerlendirme)
in %bids___i_period_sub_35% gün içinde234%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(31 Değerlendirme)

Hi. Is it very strange condition:) The tangent is measured at any point on the line. I very well know mathematics, I'm Russian old school programmer:) Relevant Skills and Experience Mathematics Proposed Milestones €2 Daha Fazla

in %bids___i_period_sub_35% gün içinde250%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(24 Değerlendirme)

Hi, there! Thanks for posting the job. I am fully skilled and experienced in c++ and excel vba programming so I can help you Relevant Skills and Experience c++ Proposed Milestones €155 EUR - For completion

in %bids___i_period_sub_35% gün içinde155%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(6 Değerlendirme)

Hi, Reading your project description about calculating the tangent to a data curve makes me feel like you have me in mind when creating the project. I have all it takes to deliver. Relevant Skills and Experience You w Daha Fazla

in %bids___i_period_sub_35% gün içinde150%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(14 Değerlendirme)

Tangent can be derived by Talyor-based differential scheme. I can do this using any of C#/Qt/C++. I am a Master of Science majored in Probability&Statistics. Check my profile, pls. Relevant Skills and Experience Mathe Daha Fazla

in %bids___i_period_sub_35% gün içinde200%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(13 Değerlendirme)
in %bids___i_period_sub_35% gün içinde55%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(1 Yorum)

algorithm and c++ expert. Stay tuned, I'm still working on this proposal.

in %bids___i_period_sub_35% gün içinde111%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(8 Değerlendirme)

experience C# developer Relevant Skills and Experience C# C C++ Proposed Milestones €138 EUR - Milestone

in %bids___i_period_sub_35% gün içinde138%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(2 Değerlendirme)

hi,i am professional in c++ Relevant Skills and Experience c++ Proposed Milestones €155 EUR - ..

in %bids___i_period_sub_35% gün içinde155%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(1 Yorum)

Hi Relevant Skills and Experience Algorithm, C Programming, C# Programming, C++ Programming, Excel Proposed Milestones €30 EUR - project milestone

in %bids___i_period_sub_35% gün içinde30%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(0 Değerlendirme)
in %bids___i_period_sub_35% gün içinde111%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(0 Değerlendirme)

Hi there can you please contact? we have skilled mathematicians in our group, they can find a formulae and we can put it in our program, can you please contact? Relevant Skills and Experience html, js Proposed Milest Daha Fazla

in %bids___i_period_sub_35% gün içinde250%project_currencyDetails_sign_sub_37% %project_currencyDetails_code_sub_38%
(0 Değerlendirme)