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pietro


Marquette University

137 total contributions since 2012

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Question


Text recognition in videos: two almost identical frames, different results
I have all, I have collected a series of video with a dashcam installed on a tractor. The dashcam reports the speed of the tr...

3 months ago | 0 answers | 0

0

answers

Question


How can I obtain satellite images to be plotted into a figure?
Hi all, I have logged the GPS position of a vehicle to make some analysis. My data is in terms of latitude and longitude. I n...

5 months ago | 0 answers | 0

0

answers

Question


How to calculate the points of a line which lies inside polygons?
Hi all, I have GPS coordinates of an off-road vehicle and I have to check when the vehicle lies on a road or on a field. I have...

8 months ago | 1 answer | 0

1

answer

Question


How to searh for very similar strings?
Hi all, I am doing a bibliometric analysis and especially, I have to search article titles on references of the citing papers. ...

10 months ago | 1 answer | 0

1

answer

Answered
How to speed up this code?
Thanks for the aswer. Now the code is really fast. I have to use contains, because I have to search for string patterns.

10 months ago | 0

Question


How to speed up this code?
Hi all, I have the following code that I need to speed-up: a(1).a='a'; a(2).a='b'; a(3).a='b'; a(4).a='c'; output=(contai...

10 months ago | 2 answers | 0

2

answers

Question


How to extract locations from strings of addresses?
Hi all, I have more than a thousand of strings containing addresses. How can I programmatically extract the locations, like ci...

10 months ago | 1 answer | 0

1

answer

Question


How to check a GPS coordinate is located on a road?
Hi all, I have GPS data collected on a vehicle and I need to check the portion of time the vehicle was used on road. To this ...

1 year ago | 1 answer | 0

1

answer

Question


How lo use selector option in shaperead to load only vector elements bounded in a area?
Hi all, I have a very large shapefile of road-network containing only coordinates and the type of elements (i.e. line) (JFI, ...

1 year ago | 0 answers | 0

0

answers

Question


Error in using fitlnm: Why do I get "The model function must accept two arguments"?
Hi all, I am having troubles in using fillnm. Below an example: clear all x=[0:0.01:10]; y=x.^2; m...

1 year ago | 1 answer | 0

1

answer

Question


Why the headerlines are not always properly detected by readtable?
Hi all, I have many .csv files to import into Matlab. Those files are automatically exported from Scopus. With most of the do...

1 year ago | 1 answer | 0

1

answer

Question


How to synchronize a time-lapse video with time-histories?
Hi all, I have a time-lapse video acquired from a dashcam installed in a weather station. The weather station acquires few ti...

1 year ago | 0 answers | 0

0

answers

Question


How to solve the duplicate function problem?
Hi all, I am running a script in Matlab 2017a where a my own function is run. Everything was running fine but lately, I get t...

2 years ago | 0 answers | 0

0

answers

Question


Text mining with matlab of affiliation strings of a pubblication database
Hi all, I want to carry out an authorship analysis by means of complex networks. Therefore, I downloaded data from Scopus as ...

2 years ago | 0 answers | 0

0

answers

Question


How to calculate the contingency table of a large dataset without memory issues?
Hi all, I am calculating a contingency table (using crosstab function) from a large array and the result will be a matrix of ...

2 years ago | 1 answer | 0

1

answer

Question


How to effectively use look ahead with regexp?
Hi all, I'm doing some coding with regular expressions, but there are a couple of things I can't understand. Look at the fol...

2 years ago | 1 answer | 0

1

answer

Question


How to set regexp so that it stops to the first istance?
Hi all, I need to extract the urls from the following html code and I am using regexp. a='<option value="http://www.trac...

2 years ago | 1 answer | 0

1

answer

Question


Why do strfind and regexp may lead to a different result?
Hi all, I noticed that regexp and strfind may lead to different results. Here an example: regexp('Infinitely Variable Tr...

2 years ago | 2 answers | 0

2

answers

Question


How to select specific urls in a webpage with regexp?
Hi all, I'm doing some webscraping from <http://www.tractordata.com/farm-tractors/tractor-brands/johndeere/johndeere-tractor...

2 years ago | 1 answer | 0

1

answer

Question


Web scraping with regular expression, getting rid of html tags.
Hi all, I am doing some webscraping code and consequently, I am using regular expressions. I need to isolate the words from ...

2 years ago | 1 answer | 0

1

answer

Question


view maps from maps.baidu
Hi all, Is there any way to plot a map from baidu into a figure? Thanks

3 years ago | 0 answers | 0

0

answers

Question


How to plot the political geography map in Matlab
Hi all, I need to make a scatter plot overlapped to the world political geography map. I tried to use plot_google_map functi...

3 years ago | 0 answers | 0

0

answers

Question


Why fscanf return strange character I do not see in notepad?
Hi all, I have several txt files that look fine in Notepad, but they are full of strange characters from fscanf and I'm wond...

3 years ago | 1 answer | 0

1

answer

Question


Regular expressions: dealing with spaces
Hi all, I have different strings wich they differ from the number of spaces among words. I need to find a way to find this s...

3 years ago | 1 answer | 0

1

answer

Question


Why confidence interval distributions overlap the distribution?
Hi all, I've a series of data that were scaled to a percentage of maximum which I need to compute the 20th percentile of the...

4 years ago | 1 answer | 0

1

answer

Question


Find the indeces of common elements of
Hi all, I have two vectors and I need to find the index of the common elements between the two vectors, but the position of ...

4 years ago | 1 answer | 0

1

answer

Question


Plotting isolines on plot_google_maps
Hi all, I have a script where I plot a gpx file on figure with the map. The map is plotted with plot_google_maps and I want ...

4 years ago | 0 answers | 0

0

answers

Question


How to superimpose a line plot to a colormap created with imagesc?
Hi all, I need to write the lines necessary to get the following plot: http://s29.postimg.org/5ed1w5tfb/signalprova.jpg In...

4 years ago | 1 answer | 0

1

answer

Answered
How can i split between strings that connected with under score?
one solution: x={ 'Penelope_Cruz' 'Gary_Cooper' 'Tony_Curtis' 'Jim_Carrey'}; for i=1:length(x) temp=strsplit(x...

4 years ago | 0

| accepted

Question


problems in passing parameters to fminsearchbnd.
Hi all, I have to fit some data and I'm using fminsearchbnd. Unfortunately the solver doesn't convergence and I have discove...

4 years ago | 1 answer | 0

1

answer

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