EnglishFrenchSpanish

OnWorks favicon

dctimestep - Online in the Cloud

Run dctimestep in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command dctimestep that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


dctimestep - compute annual simulation time-step via matrix multiplication

SYNOPSIS


dctimestep DCspec [ skyvec ]
dctimestep Vspec Tbsdf.xml Dmat.dat [ skyvec ]

DESCRIPTION


Dctimestep has two invocation forms. In the first form, dctimestep is given a daylight
coefficient specification and an optional sky vector, which may be read from the standard
input if unspecified. The daylight coefficients are multiplied against this vector and
the results are written to the standard output. This may be a list of color values or a
combined Radiance image, as explained below.

In the second form, dctimestep takes four input files, forming a matrix expression. The
first argument is the View matrix file that specifies how window output directions are
related to some set of measured values, such as an array of illuminance points or images.
This matrix is usually computed by rtcontrib(1) for a particular set of windows or
skylight openings. The second argument is the window transmission matrix, or BSDF, given
as a standard XML description. The third argument is the Daylight matrix file that
defines how sky patches relate to input directions on the same opening. This is usually
computed using genklemsamp(1) with rtcontrib in a separate run for each window or skylight
orientation. The final input is the sky contribution vector, usually computed by
genskyvec(1), which may be passed on the standard input. This data must be in ASCII
format, whereas the View and Daylight matrices are more efficiently represented as binary
float data if machine byte-order is not an issue.

Sent to the standard output of dctimestep is either an ASCII color vector with as many RGB
triplets as there are rows in the View matrix, or a combined Radiance picture. Which
output is produced depends on the first argument. A regular file name will be loaded and
interpreted as a matrix to generate a color results vector. A file specification
containing a '%d' format string will be interpreted as a list of Radiance component
pictures, which will be summed according to the computed vector.

EXAMPLES


To compute workplane illuminances at 3:30pm on Feb 10th:

gensky 2 10 15:30 | genskyvec | dctimestep workplaneDC.dmx > Ill_02-10-1530.dat

To compute an image at 10am on the equinox from a set of component images:

gensky 3 21 10 | genskyvec | dctimestep viewc%03d.hdr > view_03-21-10.hdr

To compute a set of illuminance contributions for Window 1 on the Winter solstice at 2pm:

gensky 12 21 14 | genskyvec | dctimestep IllPts.vmx Blinds20.xml Window1.dmx >
Ill_12-21-14.dat

To compute Window2's contribution to an interior view at 12 noon on the Summer solstice:

gensky 6 21 12 | genskyvec | dctimestep view%03d.hdr Blinds30.xml Window2.dmx >
view_6-21-12.hdr

Use dctimestep online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    Firebird
    Firebird
    Firebird RDBMS offers ANSI SQL features
    & runs on Linux, Windows &
    several Unix platforms. Features
    excellent concurrency & performance
    & power...
    Download Firebird
  • 2
    KompoZer
    KompoZer
    KompoZer is a wysiwyg HTML editor using
    the Mozilla Composer codebase. As
    Nvu's development has been stopped
    in 2005, KompoZer fixes many bugs and
    adds a f...
    Download KompoZer
  • 3
    Free Manga Downloader
    Free Manga Downloader
    The Free Manga Downloader (FMD) is an
    open source application written in
    Object-Pascal for managing and
    downloading manga from various websites.
    This is a mirr...
    Download Free Manga Downloader
  • 4
    UNetbootin
    UNetbootin
    UNetbootin allows you to create bootable
    Live USB drives for Ubuntu, Fedora, and
    other Linux distributions without
    burning a CD. It runs on Windows, Linux,
    and ...
    Download UNetbootin
  • 5
    Dolibarr ERP - CRM
    Dolibarr ERP - CRM
    Dolibarr ERP - CRM is an easy to use
    ERP and CRM open source software package
    (run with a web php server or as
    standalone software) for businesses,
    foundations...
    Download Dolibarr ERP - CRM
  • 6
    SQuirreL SQL Client
    SQuirreL SQL Client
    SQuirreL SQL Client is a graphical SQL
    client written in Java that will allow
    you to view the structure of a JDBC
    compliant database, browse the data in
    tables...
    Download SQuirreL SQL Client
  • More »

Linux commands

Ad