MATLAB MATRIX LABORATORY

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????? ???????? ?????? ???? ???"? (2)
????? ??' 4
??? ?''? ?????? ????????
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???? ???? ?????? MATLAB

• ????? ?????? ???? ??
• ???????? ??????? ?? ??????
• ??? ?????? ????? ?????
• ??????? ??????? ??????
• ????????? ??????? ??????? ???? ??????? ?????????
• ??? ?????? ????? - 'PLOTTING TOOL'
• ???? ?- DATA STATISTIC
• ???????

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???? ???? (????)

• ??? MATLAB ?
• MATLAB ???? ????? ????? ????? ????? ???????
  
• ????? ?????-
  Environment
• ???? ???????? ??????? -
  Mathematical Labrary
• ??? ???? -
  Matlab Language
• ????? ????? ??????? -
  Handle Graphics
• ????????? ?????????? ????? - Application Program
  Interface
• MATLAB ?????? ???? ?????? ?????
• ??????? ??????? ???????? ?????????
• ?????? ?????? ??- ???? ??????
• ????? ????????? ???? ????? ??? ?? ???? ??????

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???? ???? (????2)

• ????? ?? ?????? MATLAB
• ???? ?600,000 ??????? ??100 ??????
• ?40,000 ??????? ??????
• ??1,000 ??????? ???? ???????
• MathWorks Co ???? ?????? MATLAB
• http//www.mathworks.com/
• ???????? ???? ????? MATLAB ??????
• http//www.omikron.co.il/

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???????? ???????

• ????? ?????? ??????
• ?????? ???? ???? ???
• ??? ???? ?????? ?????, ????? ?????
  ?????
• ???????.
• ????? ???? ?????? ???? TOOLBOXES ??????? ?????
  ??? ?? ???????? ???????? ?????? ???????
  ??????. ???? ????? ??? ??????? ??????
  ????? ??????? ???? ?????.
• ????? ????? 1. ???????????
  2. ( Filename.m ) M-FILES
• ????????? ( ???? ??? ???? ????? C ? ( C
• ?????? ??????? ?? ????? ???????? ????? ?????
  ???????? ????? ????? ?? ?? ????? ?????
  (?????? ??????? ?? ????? ???????).
• MEX-FILES - ????? ???? ????? ????? ??????.

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"????? MATLAB "??? ?????? MATLAB TOOLBOXES

• ????? ?????
• Symbolic Mathematics
• Partial Differential Equations
• Signal Processing
• Image Processing
• Neural networks
• Fuzzy Logic
• Optimization
• SIMULINK (Block Oriented Simulator)
• Data Acquisition

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????? MATLAB

• ????? ???? (R14) 7.0.1 ?PC ???? ??
• DESKTOP

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????? MATLAB(????)

• ???? ?????? MATLAB Command Window
• Desktop -gt Desktop Layout -gt Command Window Only

?????
???? ????
???? ??????
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???? ??????

• ???? ????

• Preferences

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???? ?-Editor

• ????? edit ?? File-gt new/open -gt ??_?????? /
  ??_???????? ????? ?????? ???? Editor/Debugger
• ?? ???? ??????.
• ?????? ???? ?? save

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???? ?-Editor (????)

• Editor

????? ?? ????
???? ????
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???? Workspace

• ????? workspace ?? View-gt Workspace ?? ????
  Workspace ?? Desktop
• ???????
• gtgt t0pi/42piysin(t)
• ???? Workspace ????

?? ?????
???? ???? ?????? ????
???? ????? ????? ?????? ?? ?????
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??????? ?????????

• ???? ????????? ???????? ??????? ????????
  - /????? ?????
  ?????? ?? ????????? ??????? ????????
• sin,cos,tan,cot,log
• ???.
• ???? ????? ????? ????? ?? ??????????????
  pi
• ?????? ????????? I
  ?????? ???????? ????? ?????????? ??? e
  
• (??? ?? ???? ????, ?????? (
  log10(x )

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????? ?????? ???? ??????? ?????????

• / (SLASH) ??? ???? ?????? ????????
• \ (BACK SLASH ) ???????? ???? ?? ????
  ???????????.
• ?????? ans ??? ?????? ??????? ??????
  ?????? ?????, ??? ?? ????? ????? ??????
  ??.
• ???? ????? ???? ?????? ????? ?????
  ?????? ???????. (???? ????? ???? )
• ?(up arrow) ???? ?????? ???????

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??????? ???????? ?????????
- indicates comments -- Matlab works in
radians (sin(23.5))2 without
results are displaying immediately ans
0.9962 (sin(23.5))2 with
results are not displaying
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????? ????? - Demos

• Help -gt Demos-gt MATLAB -gt DESKTOP TOOLS -gt Run
  This Demo

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????????? ??????? ??????? ???? ??????? ?????????

• y random('name',A1,A2,A3,,m,n)
• Where
• name is
• 'beta' 'bino' 'chi2' or 'Chisquare'exp' or
  'Exponential'ev' or 'Extreme Value 'f'
  'gam' or 'Gamma 'gev' or 'Generalized Extreme
  Value 'gp' or 'Generalized Pareto 'geo' or
  'Geometric 'hyge' or 'Hypergeometric 'logn'
  or 'Lognormal 'nbin' or 'Negative Binomial
  'ncf' or 'Noncentral F
• 'nct' or 'Noncentral T 'ncx2' or
  'Noncentral Chi-square 'norm' or 'Normal
  'poiss' or 'Poisson 'rayl' or 'Rayleigh 't'
  'unif' or 'Uniform 'unid' or 'Discrete
  Uniform 'wbl' or 'Weibull
• A1,A2,A3, - distribution parameters
• m,n - matrix sizes
• gtgtrn random('Normal',0,1,2,4)
• rn
• 1.1650 0.0751 -0.6965 0.0591
• 0.6268 0.3516 1.6961 1.7971

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??? ?????? ????? 'PLOTTING TOOL'

• gtgtdata1rand(1,15),data2randn(1,100)
• gtgtplottools

1.Click for plot 1
2.Click for subplot
????? ????? ???? ????? ????
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??? ?????? ????? 'PLOTTING TOOL' (????)
4.Window getting with click on MORE
3.Right click on data1 and choice of HIST(x)
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??? ?????? ????? 'PLOTTING TOOL' (????2)
??? ????? ?????? ??? PLOTTOOLS OFF ?-
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??? ?????? ????? 'PLOTTING TOOL' (????2)
1. ??? ????? ?????? ??? ????? ?? - PLOTTOOLS
OFF 2. ????? ?- random ???? ?????????? ????
????? lognormal, exponential, weibull , ?-gamma
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??????? ?? ????? ??????
?????? ????????? ???"? ??? 1900 ???? 1990 t
1900101990 p 75.995 91.972 105.711
123.203 131.669 ... 150.697 179.323 203.212
226.505 249.633 p2000spline(t,p,2000),plot(t,
p,d,t, p2000) p2000 270.6060 ?????? ????
(?????) 2000 281.4219 p_tru
281.4219errror(p_tru-p2000)/p_tru100 errror
3.8433 errror_roun(roundn(p_tru,0)-roundn(p
2000,0)/roundn(p_tru,0)100 rounded
error errror_roun 3.5587
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????? ???? ??????? ????? fprintf

• ????? ?? ?????? ??? ???? ?????? ???
• fprintf(Text 5.2f Additional text \n,
  variable name)
• - sign the spot where the number is inserted
• 5.2f - field width and precision
• f - fixed point notation (for example -7.09)
• \n - new line
• ??????
• gtgttptp from previous slide
• gtgtfprintf('Year 5.0f People 5.4f millions
  \n,tp)
• Year 1900 People 75.9950 millions
• Year 1910 People 91.9720 millions
• Year 1920 People 105.7110 millions
• Year 1930 People 123.2030 millions
• Year 1940 People 131.6690 millions
• Year 1950 People 150.6970 millions
• Year 1960 People 179.3230 millions
• Year 1970 People 203.2120 millions
• Year 1980 People 226.5050 millions
• Year 1990 People 249.6330 millions

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????? ?????? ?????? ?????? ???

• ????? ???? ???????
• help command ???? ?????? ?? ??????? ???? ??
  ????? ?????? ?? ?? ????? ??
  ???????
• lookfor key word or command or function
  ????? ???? Pointer ????????? ??????? ??
  ???? ???????????
• gtgt lookfor hexadecimal
• DEC2HEX Convert decimal integer to hexadecimal
  string.
• HEX2DEC Convert hexadecimal string to decimal
  integer.
• HEX2NUM Convert IEEE hexadecimal to double
  precision number.
• HEX2NUM Hexadecimal string to number.
• NUM2HEX Number to hexadecimal string.
• HEX2BIN Convert hexadecimal strings to binary
  strings.

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????? HELPDESK

• helpdesk for receiving Help Desk Window
• Help from Desktop Help - for ML 7

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?????? ??? (????)

• ????? ???? ??????? ??????? ????? ???? ??????
  ?????? - ????? who
• a8 b9
• c1i
• dabc
• e1 2 3 4 5 6 7
• who
• Your variables are
• a b c d e
  

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????? INPUT

• variable input(string')
• gtgt ainput('enter a ')
• enter a 2
• a
• 2
• gtgtainput('enter a\n) \n - skip to the next
  line
• enter a
• 2
• a
• ltlt ainput('enter a ','s') \s string
  variable
• enter a gady
• a
• gady

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????? ?????? ??????

• 1. kovets save
• ?????? ?? ??????? ??????? ??????
  ?????.
• a8
• b1i
• c3
• save kovets
• 2. save kovets variable1 variable2
• ?????? ??? ???????? ?????
• a9
• b3
• save zz a

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????? ?????? ??????

• ????? ?????? ???? ?????? ??????
• ????? ??????? ?????? ??? help save
• ?????? ????? ??? ?? ???????, ????? ???? ???
  zz.mat ??? ??? kovets.mat ?????? ??? 1 (??? ????)
• ?? ????? ?? ????? ?????? ASCII
• SAVE fname X Y Z -ASCII???? ???? ????? ??? ????
  ????? (EXT), ????? zz

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????? ?????? ??????

• ????? clear ????? ???? ?? ?? ??????? ??????
  ??????.
• ????? clear variable_names ????? ??????
  ??????? ????
• clear a b
• whos
• Name Size Bytes Class
• c 1x1 16 double array
  (complex)
• d 1x1 16 double array
  (complex)
• e 1x7 56 double array
• Grand total is 9 elements using 88 bytes clear
• whos for showing of clear effect

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???? DATA STATISTIC

• Plot your data. For example, use these commands
  to plot the historical population data from the
  United States.
• gtgt load census
• gtgt plot(cdate,pop,'')
• In the figure window, select Tools gt Data
  Statistics

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???? ??????? ????????? - DATA STATISTIC(????)

• In the Data Statistics dialog, select the check
  box for each statistic you want to display on the
  plot. For example, to plot the mean of the
  population (Y-data), select the check box for the
  Y mean. The plot legend is updated to include
  each statistic measure you display on the plot.
  For example, y mean.

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???? ??????? ????????? (????2)

• Saving Statistics to the MATLAB Workspace
• To save the statistics generated by the Data
  Statistics tool to the MATLAB workspace, follow
  this procedure.
• Click the Save to Workspace button. In the Save
  Statistics to Workspace dialog, specify the sets
  of statistics you want to save (X-data and
  Y-data). Enter the corresponding variable names.

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???? ??????? ????????? (???? 3 )

• The Data Statistics tool saves each set of
  statistics to a structure.
• For example, when you select to save the X-data
  statistics for the census data in the variable
  census_dates, the resulting structure looks like
  this
• gtgtcensus_dates
• min 1790
• max 1990
• mean 1890
• median 1890
• std 62.0484
• range 200

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???????

• ???? ????? ?????? ????? ??????? ???? s ????? ???
  1 ?-10. ????? ?- SLIDER
• ???? ????????? ???? ?????? ??????? ????? ????????
  rnorm ???? ???? ?????? ????? ??? 10 ?-1000. ?????
  ? SLIDER.
• 3. ???? ?? ??????? ??????? ???????? (????? 2)
  ????? ?-pdf ?? ????? ???????.

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??????? (????2)

• 4. The distance d from point (x0,y0) to a line
  AxByC0 is given by
• Determine d when x02,y0-3, A3, B5, C-6. Plot
  3D graph of d as function of x0 and y0
• (Use symbolic toolbox command for substitute and
  plotting).
• 5. Evaluate
• when a15.62, b-7.08, c62.5, d0.5(ab-c). Use
  fprintf for printing result and inputted variables