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Ede gerlderlands


自 2012 起处于活动状态

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统计学

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how to download data from websites?
Hey all; I have to obtain data from OPeNDAP data set. How can I download it? is there a matlab function for it? I tried to us...

10 years 前 | 1 个回答 | 0

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Polyfit in case of power function
Hi All. I have an equation of the form y=b+ a.x^(1/3) I tried to fit a line by assuming m=x^(1/3); p=polyfit(m,y,...

11 years 前 | 0 个回答 | 0

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Bringing plots into a single figure
Hi All; I have 6 matlab plots which I myself didn't plot. Can I bring this separate plots into one plot of 3x2 subplots. A...

11 years 前 | 4 个回答 | 0

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Putting together matlab plots into one
Dear All I have 8 separae matlab plots. Is there a way to put them into one matab figure of such as 2x4? I tried to use sub...

11 years 前 | 1 个回答 | 0

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Nonlinear regression in case of many fits
I have tried to fit certain data points using equation of the form y=ax^-1/3. My first question is , Is it possible to linearise...

11 years 前 | 1 个回答 | 0

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Fit in matlab equations
How can I fir cube equation in matlab

11 years 前 | 1 个回答 | 0

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How to convert cell to matrix
I have a cell which is given by A= <1x13cell>. I want to extract the contents of the cell into the form of a matrix of size (13...

11 years 前 | 3 个回答 | 0

3

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finding values from matrix
Dear All I have a matrix which is given by A= [20 140]. I want to find the location of elements in A which are greter than 45...

11 years 前 | 3 个回答 | 0

3

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X axis of feather plot
I plotted vector of wind velocity given by U and V , as feather(U,V) Is there a way to provide the x axis in such a wa...

11 years 前 | 1 个回答 | 0

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Magnitude and direction of vectors
I have really find it difficult to plot both flow and direction of flow vectors superimposed each other. I have plotted the dire...

11 years 前 | 1 个回答 | 0

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How to use accumarray?
I have a matrix of y=[9, 5346] I want to find the the mean of every six values of each row. I tried this function but can't r...

11 years 前 | 2 个回答 | 0

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plotting magnitude of vectors
I have two matrix of x= [1 250] and y= [1 250]. These are readings of signal which contains negative and positive values. I mana...

11 years 前 | 0 个回答 | 0

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'x10^5' show up in MATLAB plots
Why is 'x10^5' show up in MATLAB plots once I change 'datenum' to actual dates using 'datetick'. In the same manner the datenu...

11 years 前 | 1 个回答 | 0

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Error in matlab Improper assignment with rectangular assignment with rectangular matrix
hey matlab friends; I want to find the locatons of matrixpoints which is given by comtime=[4449,1] from a matrix Tt= [5400,1]...

11 years 前 | 1 个回答 | 0

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how to exract varying matrix data
I have a file X=(20,350) and i want to select the column value using a selecting a selcting matrix y= (1,350) for i= 1:350 ...

11 years 前 | 1 个回答 | 0

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Replicating a matrix in matlab
I have a matrix v=(1:2400,1). I want to replicate each element of v by the corresponding element in p=(1:2400). Here is the func...

11 years 前 | 2 个回答 | 1

2

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Error ' Assignment has more non-singleton rhs dimensions than non-singleton..'
I want to find the location of maximum 'EC' in the first direction. Here is the code I used to find so. for ii=1:size(EC,2);...

11 years 前 | 0 个回答 | 0

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How to interpolate to the nearest value
HI I have vector, v=(x,Y) and I want to find the nearest value of 'x' for C=(1,yi) rather than the interpolated values of ...

11 years 前 | 2 个回答 | 0

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How can I generate random numbers
I have along data series which contains 3451 elements. From this I want to select 1/3 rd of the elements for validation purpose ...

11 years 前 | 1 个回答 | 0

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varying size of window for filtering
Am processing time series signal which has semi diurnal nature. I want to pass a filtering window of varying size which has wi...

11 years 前 | 0 个回答 | 0

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why filtering gives nan values.
Am applying low pass filter to my signal data using [b11,a11] = butter(5,4/24); MM1= filtfilt(b11,a11,MM1); but the r...

11 years 前 | 1 个回答 | 0

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Trouble with time lag between peaks
I have two series of data: (time,x) and (time,y) . My intention is to plot the time lag between the the peaks in x and y . Due t...

11 years 前 | 1 个回答 | 0

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Interpolation incase on nan
I have a data which includes nans and I used interp1 to interpolate the data points, but error message is popping up which says ...

11 years 前 | 1 个回答 | 0

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How to detect a peak from a graph
A part of my work need me to peak the peak from a graph of cyclic nature with time vs velocity. I tried to use treshold and and ...

11 years 前 | 4 个回答 | 0

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obtaining the maximum values from the series
I have two series of readings (time, x) and (time, y). Both graphs have cyclic nature which respect to time. With peak and trou...

11 years 前 | 2 个回答 | 0

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How can I add y labels on both axis of matlab plot
I have a plot which is already plotted by some one else. It has ylabel on the right side and I want to show the same labels on t...

11 years 前 | 1 个回答 | 0

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How to add columns with month number and day
Hi I have daily observation data which runs for 8 years. The beginning of the data is 1St of January 2000 and ends on 30 Apri...

12 years 前 | 1 个回答 | 0

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Changing the axis property of matlab
I have the already plotted matlab figure and I want to change the x-axis value of the plot. I intend to multiply the old x -val...

12 years 前 | 1 个回答 | 0

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How can I draw hysteresis loop using matlab
I have velocity ,v, and discharge, q, vectors . I want to draw hysteresis plot between the two. I used plot_dir function but it ...

12 years 前 | 1 个回答 | 0

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Correlation coefficient for robust fit and regress fitting are they equal?
I have done regression analysis for the x and Y using two cases. For the first regression I used 'regress' and for the second ca...

12 years 前 | 1 个回答 | 0

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