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Technical Support
DADiSP 6.0 B18 Release Notes
SPL Functions
Along with built-in routines, DADiSP includes many SPL functions located in the main SPL directory. These functions are arranged by category and reside in appropriately named sub-directories within the SPL directory.
To quickly obtain information on any SPL function, use the help command. For example, to obtain help on the SPECGRAM function, type:
help specgram
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SPL Functions Listed by Directory
.\spl\activex
| dsptest1.txt | Visual Basic Automation example code |
| dsptest2.txt | Visual Basic Automation example code |
| dsptest3.txt | Visual Basic Automation example code |
| msword.spl | Demonstrates ActiveX with MS Word |
| msword2.spl | Copies a Worksheet to MS Word via ActiveX |
| ws2html.spl | Converts a Worksheet to HTML using Word and ActiveX |
| xlclear.spl | Clears an ActiveX connection with Excel |
| xlget.spl | Gets a range of values from Excel |
| xlinit.spl | Initializes an ActiveX connection with Excel |
| xlput.spl | Transfers a series to Excel |
.\spl\colors
| colorbar.spl | Adds a colorbar legend for color shaded plots |
| cool.spl | Shades of blue colormap |
| copper.spl | Shades of brown colormap |
| getrgb.spl | Returns individual red, green and blue image components |
| gray.spl | Black & White colormap |
| hot.spl | Shades of red colormap |
| pink.spl | Shades of pink colormap |
| rainbow.spl | Colors of rainbow colormap |
| resetmap.spl | Resets colormap in a Worksheet |
| savecmap.spl | Saves a colormap with a Worksheet |
| setcrange.spl | Sets the color range of shaded plots |
| showcmap.spl | Displays current colormap |
.\spl\curvefit
| expfit.spl | Exponential fit, A * exp(B*x) |
| lfit.spl | Fits a line using the end points |
| lsinfit.spl | Fits a sinewave of a known frequency |
| pfit.spl | Polynomial fitting with statistics |
| powfit.spl | Power fit, A * x ^B |
| sinfit.spl | Fits y(x) = A + B * sin(C*x + D) using the FFT |
| sintrend.spl | Fits y(x) = A + B*x + C * sin(D*x + E) using the FFT |
.\spl\debug
| dbstop.spl | Establish a breakpoint |
| dbcont.spl | Continue debugger execution |
| dbquit.spl | Exit debugger |
| dbstep.spl | Step to next source code line |
| dbclear.spl | Clear a breakpoint |
| dbstatus.spl | Display current debugger status |
| dbstack.spl | List SPL function calls |
| dbup.spl | Move up the call stack |
| dbdown.spl | Move down the call stack |
.\spl\dsp
| acorr.spl | Autocorrelation with normalization |
| acov.spl | Autocovariance |
| avgfilt.spl | Nearest neighbor averaging |
| bestpow2.spl | Determines best power of 2 length for FFT processing |
| bilinear.spl | S to Z domain transformation |
| bitquant.spl | Quantize to 2^N discrete levels |
| bitscale.spl | Scales raw A/D counts to engineering units |
| circonv | Time domain circular convolution |
| cceps.spl | Complex Cepstrum |
| clogmag.spl | Frequency response of cascade form IIR filters |
| covm.spl | Covariance matrix |
| dct.spl | Discrete cosine transform |
| demodfm.spl | Demodulates an FM signal |
| effbit.spl | Effective bit calculation |
| endflip.spl | Pads endpoints with reflections of end segments |
| facorr.spl | Autocorrelation using the FFT method |
| facov.spl | Autocovariance using the FFT method |
| fcirconv | Frequency domain circular convolution |
| fconv.spl | Convolution using the FFT method |
| fftshift.spl | Shifts DC frequency to middle of FFT plot |
| filteq.spl | Evaluates a Difference Equation |
| firsamp.spl | Frequency Sampling FIR with XY input |
| freqsamp.spl | Frequency Sampling FIR filter design |
| fxcorr.spl | Cross-correlation using the FFT method |
| fxcov.spl | Cross-covariance using the FFT method |
| fzinterp.spl | Interpolation using FFT zero insertion, factor based |
| grpdelay.spl | Calculates the group delay of a Z transform |
| hamming.spl | Hamming window with optional amplitude correction |
| hanning.spl | Hanning window with optional amplitude correction |
| hilb.spl | Hilbert transformer |
| icceps.spl | Inverse Cepstrum transform |
| idct.spl | Inverse discrete cosine transform |
| impz.spl | Z Domain Impulse Response |
| invpsd.spl | Generate a Time Series from a PSD |
| kaiser.spl | Kasier window with optional amplitude correction |
| linscale.spl | Linear conversion of series range |
| log2.spl | Log base 2, useful for FFT calculations |
| nextpow2.spl | Get next power of two |
| oasfilt.spl | Overlap and save method of filtering |
| padfilt.spl | FIR filtering with end point padding |
| powspec.spl | FFT based power spectrum |
| poly.spl | Characteristic polynomial coefficients |
| quantize.spl | Quantize to N discrete levels |
| rceps.spl | Real cepstrum |
| removena.spl | Remove NA values from a series |
| residue | S Domain Partial Fraction Expansion |
| residuez | Z Domain Partial Fraction Expansion |
| shp.spl | Single pole analog high pass filter emulation |
| slp.spl | Single pole analog low pass filter emulation |
| sonogram.spl | 2D B&W Time vs Frequency FFT |
| specgram.spl | 2D Color Time vs Frequency FFT |
| starms.spl | Short time averaged RMS series |
| tf2ss.spl | Transfer function to state space conversion |
| winfunc.spl | Generic windowing functions |
| xcorr.spl | Time domain cross-correlation |
| xcov.spl | Time domain covariance |
| zeroflip.spl | Flips endpoints about zero |
| zfreq.spl | Frequency response of a Z transform |
| zinterp.spl | Zero insertion interpolation - rate based |
| zpfcoef.spl | Digital filter design from S domain specs |
| zplane.spl | Pole-Zero Plot |
.\spl\generate
| eye.spl | Identity matrix |
| fxyvals.spl | Generates X and Y values for Z = F(x, y) function |
| gimpulse.spl | Generates an impulse with a sample rate |
| grtsqr.spl | Generate square wave with rise time |
| gsweep.spl | Generate a linearly swept sinewave |
| linspace.spl | Generate equally space values |
| logspace.spl | Generate log spaced values |
| meshgrid.spl | Generate XY array from XY series |
| ones.spl | Creates an array of all ones |
| rand.spl | Generate NxM random array |
| randn.spl | Generate NxM normally distributed random array |
| zeros.spl | Creates an array of all zeros |
.\spl\image
| brighten.spl | Brightens or darkens an image |
| dct2.spl | 2D Discrete cosine transform |
| fft2.spl | 2D FFT Cartesian form |
| fftp2.spl | 2D FFT Polar form |
| histeq.spl | Histogram equalization |
| idct2.spl | 2D inverse discrete cosine transform |
| ifft2.spl | 2D inverse FFT Cartesian form |
| ifftp2.sp | 2D inverse FFT Polar form |
| image24.spl | Converts an image to 24 bit |
| iminterp.spl | Interpolates an image |
| rgbimage.spl | Creates a 24 bit image from separate rgb components |
.\spl\include
| series.h | Useful constants and macros |
.\spl\iofun
| readbmp.spl | Reads a bitmap file |
| readmat.spl | Reads a Matlab 4 matrix |
| readtb.spl | Reads a binary table |
| writebmp.spl | Writes a bitmap |
| writetb.spl | Writes a binary table |
.\spl\math
| dydx.spl | Derivative of XY data |
| movavg2.spl | Moving average with end point padding |
| movrms.spl | Moving RMS series |
| movstd.spl | Moving standard deviation |
| polyroot.spl | Polynomial roots |
| trapz.spl | Integration using the trapezoidal rule |
| unmerge.spl | Demultiplexes an interlaced series |
.\spl\math2d
| gradient.spl | 2D gradient estimation |
| igrid.spl | Grids irregular XYZ data using inverse distance method |
| interp2.spl | 2D linear interpolation |
| peaks.spl | Generates a 3D surface |
| sgrid.spl | Grids irregular XYZ data using splines |
| spin.spl | Spins a 3D plot |
| spline2.spl | 2D spline interpolation |
| xyz.spl | XYZ help file |
.\spl\matrix
| colnos.spl | Generate matrix of column numbers |
| cond.spl | Estimates condition number |
| eig.spl | Returns eigenvalues and eigenvectors |
| lotri.spl | Extract lower triangle |
| lotrix.spl | Extract lower triangle excluding main diagonal |
| norm.spl | Matrix norm |
| null.spl | Orthogonal basis for NULL space |
| orth.spl | Orthogonal basis for an array |
| pinv.spl | Pseudo-inverse of an array |
| qr.spl | QR decomposition |
| rank.spl | Number of independent rows or columns |
| rownos.spl | Generate matrix of row numbers |
| trace.spl | Diagonal sum |
| uptri.spl | Extract upper triangle |
| uptrix.spl | Extract upper triangle excluding main diagonal |
.\spl\misc
| examples.spl | SPL code examples |
| ctree.spl | Binary fractal creation |
| numvwins.spl | Number of visible Windows |
.\spl\plot
| ascale.spl | Turns On/Off autoscaling |
| barctr.spl | Centers bar plots |
| bargap.spl | Specifies gaps between bars |
| barstyle.spl | Sets the vertical reference for a bar plot |
| bartop.spl | Turns On/Off coloring the tops of 3D bar plots |
| cut.spl | Cuts the contents of a window into the current window |
| resetscr.spl | Resets screen display from scr2prt |
| sethatch.spl | Sethatch help file |
| setvport.spl | Sets viewport of the current window to the input window |
| setwlab.spl | Sets a window label |
| scr2prt.spl | Sets screen to appear as print output |
| stepctr.spl | Centers step plots |
| xsubtic.spl | Turns On/Off X subtic labels on log plots |
| ysubtic.spl | Turns On/Off Y subtic labels on log plots |
.\spl\realtime
| rtread.spl | Example of reading real time data |
| rttinit.spl | Rttinit help file - real time task initialization |
| rttpause.spl | Rttpause help file - real time task pause/continue |
| rttterm.spl | Rttterm help file - real time task termination |
| rtwrite.spl | Example of writing real time data |
.\spl\series
| all.spl | Returns 1 if all elements of the input are non-zero |
| any.spl | Returns 1 if any element of the input is non-zero |
| colprod.spl | Product of each column in an array |
| findmax.spl | Returns the max and location of the max value |
| findmin.spl | Returns the min and location of the min value |
| findval.spl | Returns the value and location of an arbitrary value |
| fix.spl | Rounds value to zero |
| idxtox.spl | Convert index to X value |
| iscomplx.spl | Checks if value is complex |
| isreal.spl | Checks if value is real |
| markmax.spl | Marks the maximum of a series |
| markmin.spl | Marks the minimum of a series |
| maxval.spl | Returns maximum of two arguments |
| minval.spl | Returns minimum of two arguments |
| nibble.spl | Extract out 4 bit nibble |
| prod.spl | Product of each element of a series |
| rat.spl | Rational approximation of a value |
| rem.spl | Modulo |
| outlier.spl | Replaces outliers with linear interpolation |
| replace.spl | Replaces values in a series based on a condition |
| rowlen.spl | Number of elements in each row |
| rowmax.spl | Maximum of row elements |
| rowmean.spl | Mean of row elements |
| rowmin.spl | Minimum of row elements |
| rowsum.spl | Sum of row elements |
| rowstdev.spl | Standard deviation of row elements |
| sercount.spl | Total number of series in a Window |
| size.spl | Returns dimensions of an array |
| valfill.spl | Replaces a value with previous or next values |
| vmax.spl | Maximum of any number of inputs |
| vmin.spl | Minimum of any number of inputs |
| xtoidx.spl | Convert X value to index |
| xylookup.spl | Interpolate Y value from arbitrary X value |
| xymerge.spl | Merge series by respecting X values |
.\spl\stats
| a2std.spl | Alpha confidence level to standard deviation |
| cnf2std.spl | Confidence (%) level to standard deviation |
| confx.spl | Confidence level for given density function and x |
| erfcinv.spl | Inverse complementary error function |
| erfinv.spl | Inverse error function |
| pearson.spl | Calculates Pearson's linear correlation coefficient |
| probn.spl | Probability of X <= z for normal distribution |
| stderr.spl | Standard Error |
| svd.spl | Singular Value Decomposition |
| svddiv.spl | Solves for x in A *^ x = b using SVD |
| trend.spl | Least squares best fit line |
| xconf.spl | X value of confidence level for a given density function |
.\spl\timedate
| dtxy.spl | Return the date, time and Y values of a series |
| julymd.spl | Converts a series if YMD values to Julian dates |
.\spl\utils
| chkfiles.spl | Checks database integrity |
| chr2chr.spl | Replaces a character in a string |
| defvar.spl | Default a variable if not defined |
| dirpath.spl | Returns directory component of a path string |
| fixslash.spl | Fixes \ character in a string |
| formula.spl | Writes out the formulae of a Worksheet |
| hex.spl | Simple hex converter |
| hex2int.spl | Convert hex value to integer |
| int2hex.spl | Convert integer to hex |
| isfunc.spl | returns 1 if SPL function loaded, else 0 |
| isunit.spl | Determines if string is a recognized unit |
| mort.spl | Mortgage calculator |
| mpay.spl | Mortgage payment routine |
| writecnf.spl | Writes configuration settings to a file |
TeX Support 