Data manipulation, Microeconomics

Assignment Help:

Data were taken with a Data Acquisition System (DAQ) and stored in the data file 'data.txt'. 'data.txt' is a text file with 3 columns containing the following data:

Column 1: Time [s]
Column 2: Voltage [V]
Column 3: Laser Doppler Vibrometer (LDV) velocity signal [mm/s]

Load the data into Matlab (use the 'load' command), and create one figure with (2x2) subplots. Plot the following data:

1.  In the 1st subplot (upper left corner), plot channel 2 in mV versus time in ms

2.  In the 2nd subplot (upper right corner), we want to plot the moving average of the voltage signal (channel 2) in mV versus time in ms. For the moving average calculation, compute the average value of the past 500 samples. Use a for or while-loop. Note that the moving average for the first 499 samples is equal to zero.

3.  For subplot 3 (lower left corner),  plot the LDV velocity signal in mm/s versus time in ms

4.  In subplot 4 (lower right corner), we want to plot the  integrated LDV signal in nm versus time in ms. To obtain the displacement signal in mm, integrate the LDV velocity signal by using the following command line detrend(cumsum(dataOfChannel3))/ Fs;

where Fs  denotes the sampling frequency at which the data was acquired.  Fs  can be calculated from the time vector (column 1) via 
Fs = 1/(t(2)-t(1))

where t represents the time vector. 'cumsum' computes the cumulative sum of the elements. For instance, cumsum([1 2 3]) = [1 (1+2) (1+2+3)] = [1 3 6]. 'detrend' removes the linear trend from a vector, as shown in the figure below.

1433_Data manipulation.png


Related Discussions:- Data manipulation

Concept of money, The Concept of Money: Money or paper currency serves ...

The Concept of Money: Money or paper currency serves three functions in any case: it is the medium of exchange, a store of value and the unit of account. Before paper money was

Divisional structure, Divisional Str ucture Some organizations...

Divisional Str ucture Some organizations run as a number of divide, autonomous business units, synchronized by a central headquarters. This is a divisional structure.

Cost considerations for managers, Some Cost Considerations for Managers ...

Some Cost Considerations for Managers * Three guidelines for estimating the marginal cost(MC): 1) Average variable cost should not be used as substitute for the marginal cost(

Types of inflation in a country, (a) Describe the different types of inflat...

(a) Describe the different types of inflation in a country. (b) Describe the trade-off between inflation and unemployment, using appropriate diagrams. (c) Mauritius has bee

A period of transition and improvement, A Period of Transition and Improvem...

A Period of Transition and Improvement: These few years stand out as the golden years for India's BOP. India had a small current account surplus (0.6 per cent of the GDP on an

Discussion Board, In theory, we know that a monopolist basis its price dire...

In theory, we know that a monopolist basis its price directly off of the demand curve, but in practice a monopolist cannot ''see'' the demand curve. Explain how a monopolist might

Plot the budget constraints on the graph, 1. Let's get some practice plotti...

1. Let's get some practice plotting budget constraints. On the graph below, plot the budget constraints when: a. (Use Black): P x = 57,P y = 18, and M = 342. b. (Use Blue):

Neer vs reer, NEER Vs REER: In a situation where there are multiple tr...

NEER Vs REER: In a situation where there are multiple trade partners, the effect of cross-currency movements are judged by nominal effective exchange rate (NEER) and real effe

Calculate the keynesian multiplier and short run equilibrium, The governmen...

The government notices that there is an output gap and decides to increase government spending with a stimulus package of $4 trillion in hopes that it will spur growth and stop une

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd