analysis test p3

como faço plotagem de gráficos?

[John D'Errico]

help plot

 PLOT   Linear plot. 
    PLOT(X,Y) plots vector Y versus vector X. If X or Y is a matrix,
    then the vector is plotted versus the rows or columns of the matrix,
    whichever line up.  If X is a scalar and Y is a vector, disconnected
    line objects are created and plotted as discrete points vertically at
    X.
 
    PLOT(Y) plots the columns of Y versus their index.
    If Y is complex, PLOT(Y) is equivalent to PLOT(real(Y),imag(Y)).
    In all other uses of PLOT, the imaginary part is ignored.
 
    Various line types, plot symbols and colors may be obtained with
    PLOT(X,Y,S) where S is a character string made from one element
    from any or all the following 3 columns:
 
           b     blue          .     point              -     solid
           g     green         o     circle             :     dotted
           r     red           x     x-mark             -.    dashdot 
           c     cyan          +     plus               --    dashed   
           m     magenta       *     star             (none)  no line
           y     yellow        s     square
           k     black         d     diamond
           w     white         v     triangle (down)
                               ^     triangle (up)
                               <     triangle (left)
                               >     triangle (right)
                               p     pentagram
                               h     hexagram
                          
    For example, PLOT(X,Y,'c+:') plots a cyan dotted line with a plus 
    at each data point; PLOT(X,Y,'bd') plots blue diamond at each data 
    point but does not draw any line.
 
    PLOT(TBL,XVAR,YVAR) plots the variables xvar and yvar from the table
    tbl. To plot one data set, specify one variable for xvar and one
    variable for yvar. To plot multiple data sets, specify multiple
    variables for xvar, yvar, or both. If both arguments specify multiple
    variables, they must specify the same number of variables
  
    PLOT(TBL,YVAR) plots the specified variable from the table against the
    row indices in the table. If the table is a timetable, the specified
    variable is plotted against the row times from the timetable.
 
    PLOT(X1,Y1,S1,X2,Y2,S2,X3,Y3,S3,...) combines the plots defined by
    the (X,Y,S) triples, where the X's and Y's are vectors or matrices 
    and the S's are strings.  
 
    For example, PLOT(X,Y,'y-',X,Y,'go') plots the data twice, with a
    solid yellow line interpolating green circles at the data points.
 
    The PLOT command, if no color is specified, makes automatic use of
    the colors specified by the axes ColorOrder property.  By default,
    PLOT cycles through the colors in the ColorOrder property.  For
    monochrome systems, PLOT cycles over the axes LineStyleOrder property.
 
    Note that RGB colors in the ColorOrder property may differ from
    similarly-named colors in the (X,Y,S) triples.  For example, the 
    second axes ColorOrder property is medium green with RGB [0 .5 0],
    while PLOT(X,Y,'g') plots a green line with RGB [0 1 0].
 
    If you do not specify a marker type, PLOT uses no marker. 
    If you do not specify a line style, PLOT uses a solid line.
 
    PLOT(AX,...) plots into the axes with handle AX.
 
    PLOT returns a column vector of handles to lineseries objects, one
    handle per plotted line. 
 
    The X,Y pairs, or X,Y,S triples, can be followed by 
    parameter/value pairs to specify additional properties 
    of the lines. For example, PLOT(X,Y,'LineWidth',2,'Color',[.6 0 0]) 
    will create a plot with a dark red line width of 2 points.
 
    Example
       x = -pi:pi/10:pi;
       y = tan(sin(x)) - sin(tan(x));
       plot(x,y,'--rs','LineWidth',2,...
                       'MarkerEdgeColor','k',...
                       'MarkerFaceColor','g',...
                       'MarkerSize',10)
 
    See also PLOTTOOLS, SEMILOGX, SEMILOGY, LOGLOG, PLOTYY, PLOT3, GRID,
    TITLE, XLABEL, YLABEL, AXIS, AXES, HOLD, LEGEND, SUBPLOT, SCATTER.

    Documentation for plot
       doc plot

    Other uses of plot

       alphaShape/plot
       antenna/plot
       backscatterBicyclist/plot
       backscatterPedestrian/plot
       Battery.Parameters/plot
       Battery.Pulse/plot
       Battery.PulseSequence/plot
       BayesianOptimization/plot
       blm/plot
       cfit/plot
       cgv.CGV/plot
       clusterDBSCAN.clusterDBSCAN/plot
       clustergram/plot
       clustering.evaluation.CalinskiHarabaszEvaluation/plot
       comm.CCDF/plot
       comm.MemorylessNonlinearity/plot
       conjugateblm/plot
       cuboidModel/plot
       customblm/plot
       cylinderModel/plot
       diffuseblm/plot
       digraph/plot
       driving.heremaps.LaneTopology/plot
       driving.Path/plot
       drivingScenario/plot
       dspdata/plot
       dtree/plot
       edwttree/plot
       empiricalblm/plot
       fairnessMetrics/plot
       fints/plot
       frd/plot
       graph/plot
       HeatMap/plot
       iddata/plot
       idnlarx/plot
       idnlhw/plot
       imageviewset/plot
       InflationCollisionChecker/plot
       KAZEPoints/plot
       lassoblm/plot
       LayerGraph/plot
       LeastSquaresResults/plot
       lime/plot
       LinearModel/plot
       matlab.buildtool.Plan/plot
       mixconjugateblm/plot
       mixsemiconjugateblm/plot
       mpc/plot
       MSERRegions/plot
       NLMEResults/plot
       ntree/plot
       opc.hda.Data/plot
       opticalFlow/plot
       parkingSpace/plot
       pathPlannerRRT/plot
       pcviewset/plot
       phased.FMCWWaveform/plot
       phased.LinearFMWaveform/plot
       phased.MFSKWaveform/plot
       phased.PhaseCodedWaveform/plot
       phased.RectangularWaveform/plot
       phased.SteppedFMWaveform/plot
       phytree/plot
       planeModel/plot
       polyshape/plot
       predmaint/plot
       prob.NormalDistribution/plot
       propagationData/plot
       pulseWaveformLibrary/plot
       RepeatedMeasuresModel/plot
       resppack.nyquistplot/plot
       resppack.pzplot/plot
       resppack.rlplot/plot
       resppack.timeplot/plot
       rfchain.rfchain/plot
       rfpcb/plot
       roadrunnerHDMap/plot
       rocmetrics/plot
       ros/plot
       rwvtree/plot
       SE3/plot
       semiconjugateblm/plot
       sfit/plot
       shapley/plot
       SimBiology.fit.ParameterConfidenceInterval/plot
       SimBiology.fit.PredictionConfidenceInterval/plot
       SimBiology.gsa.ElementaryEffects/plot
       SimBiology.gsa.MPGSA/plot
       SimBiology.gsa.Sobol/plot
       simscape.logging.Node/plot
       simscape.logging.Series/plot
       simscape.logging/plot
       Simulink.sdi.DatasetRef/plot
       Simulink.SimulationData.Dataset/plot
       Simulink.SimulationData.Parameter/plot
       slrealtime.ProfilerData/plot
       tall/plot
       timeseries/plot
       umargin/plot
       vehicleCostmap/plot
       wavelet/plot
       wdectree/plot
       wvtree/plot

If you want better help, then ask a clear question.

Answer 1

[Sergio Federer]

COMPRESSÃO DE IMAGENS

Answer 2

[Sergio Federer]

quanto maior o valor da terceira linha, a imagem perde mais qualidade

fftshift(OF) %deslocamento/centralização do espectro

Answer 3

[Sergio Federer]

Questão 3 (D) - FALSA

a transformada hit-miss ao definir elementos estruturais (string de texto) efetua a transformação acerto-erro e obtem as coordenadas explicitas de posições

Answer 4

[Sergio Federer]

Questão 3 (E) - FALSO

A teoria de Fourier é baseada na idéia que qualquer função pode ser decomposta de senos e cossenos de diferentes frequências.

Answer 5

[Sergio Federer]

%ALÉM DE CRIAR OS 3 BOTÕES, TEM QUE ABRIR UMA STATIXTEXT PRA EXIBIR O NUMERO DE OBJETOS

(NÃO CONSEGUI A LIMIARIZAÇÃO)

function pushbutton1_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

global a

a=imread(uigetfile('*.jpg;*.png;*.bitmap'));

axes(handles.axes1);

imshow(a);

% --- Executes on button press in pushbutton2.

function pushbutton2_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

global a

global bw

b = rgb2gray(a);

bw = im2bw(b);

axes (handles.axes2);

imshow(bw);

% --- Executes on button press in pushbutton3.

function pushbutton3_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton3 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

global a

global bw

[L,num] = bwlabel(bw);

axis image; axis off;num

set(handles.text1,'String',num2str(num));