Stereographic Suite

[Johanne]

The user when prompted, must then click points within the graphics window around the structural measurements for analysis (see image below). Press Esc on the keyboard to close the segment and process the data.

Now the stereonet is displayed on screen other functions can be utilised, such as Create Planes from stereographic projection to determine the mean plane of a group of structural measurements. This plane can be used within mine designs to ascertain whether slope failure is likely.

To generate the mean plane go to, Database > Structural Suite > Create Planes from stereographic projection. Digitise around the points of interest within the stereonet or symbols in the graphics window. For example:

The present booklet is devoted to proofs of the aforesaid properties of the stereographic projection and to the presentation of some of its applications. The booklet consists of eight sections dealing with different properties of projections. ...The booklet is aimed to be used in the senior grades of the high schools and by the first- and second-year students.

In Sec. 2 we establish the connection between the stereographic projection and a remarkable transformation of a plane onto itself in which the circles are also transformed into
circles or straight lines and the angles between the lines are transformed into the angles equal to them - this transformation is called the inversion with respect to a circle; in the same
section we establish the relation of the stereographic projection to the similar transformation of space - the inversion with respect to a sphere.

Sec. 4 establishes the relation between the stereographic projection and the complex numbers: when the projection plane is considered to be a plane of a complex variable, mapping of complex numbers by the points on the sphere is realized by means
of a stereographic projection. This mapping is frequently utilized in the theory of functions of complex variables since the so-called point at infinity of the plane of the complex variable, which cannot be mapped on the plane itself, is given on the sphere by the very projection centre. The same section discusses the so-called spherical metric on a plane when the distance between two points of the plane is assumed equal to a spherical distance between the corresponding points on the sphere; this distance is expressed in the simplest form by means of complex numbers.

In Sec. 5 we show how the rotations of the sphere are mapped by the plane transformations in the stereographic projection; these transformations are also expressed most simply by means of complex numbers.

Sec. 8 presents the definition of the Lobachevskian plane, demonstrates how a peculiar
stereographic projection can yield a projection of the Lobachevskian plane onto an ordinary plane so that the circles and some other curves on the Lobachevskian plane are mapped as circles or straight lines while the angles between the lines of the Lobachevskian plane are mapped as the angles equal to them.

A suite of MODerate-resolution Imaging Spectroradiometer (MODIS) snow and sea ice products, developed at NASA / GSFC, are available through the National Snow and Ice Data Center. The suite of products consists of global daily, 8-day maximum and monthly snow cover at 500-m and 0.5-km spatial resolution; daily cloud-gap-filled snow cover; daily snow albedo at 500-m resolution; and daily sea ice extent and ice-surface temperature (IST). Nearly-identical product suites are available both from the Terra and Aqua satellites in HDF-EOS format.

A special Terra MODIS daily product of the Greenland Ice Sheet is also available. This product consists of layers of ice-surface temperature, albedo and water vapor for the Greenland Ice Sheet (2000 - 2016) at a spatial resolution of 0.78 km, on a polar stereographic grid in NetCDF format.

The MCF has purchased the crystalmaker software suite for the GT community. This software suite can model and simulate diffraction data, simulate diffraction patterns, and more. OIT will be updating the software codes for download, but you can also reach out to David Tavakoli (atavakoli6 @ gatech.edu) using a GT email address.

A Coronagraph is an instrument which studies the Sun's outer atmosphere, the corona. From Earth the corona is most easily seen during a total solar eclipse. It is also possible to cover the bright disk of the Sunwith a disk to create a sort of mini-eclipse and allows us to see the Sun's fainter outer atmosphere. Ifwe do this from space we do not have to worry about the bright blue sky which makes this harder to dofrom Eath's surface.

Each STEREO spacecraft has two coronagraphs which study the Sun fromspace. These two coronagraphs, which are part of STEREO's SECCHI suiteof imagers, have different fields of view, using different sized occulting disks to allow us to see the faint corona at different distances from the Sun's surface.

The image is from STEREO SECCHI's Cor2 coronagraph on the Ahead spacecraft. The white circle shows the size and location of the Sun's surface. The color isn't "real". We color code the images so we cantell them apart quickly.

This toolbox is for importing, analyzing, and displaying Antarctica-related data. AMT is designed to provide a standard framework to allow easy pairing of multiple different types of data sets (surface elevation, ice velocity, grounding line, etc). For a quick overview, check the Examples tab on this page and click "AMT Getting Started". To find data-specific plugins for this toolbox, search the File Exchange site for "AMT".

Note to users: AMT was originally written to be used with Matlab's Mapping Toolbox. However, Matlab's Mapping Toolbox is sometimes inefficient and difficult to work with. And depending on Matlab's Mapping Toolbox makes it harder to share codes. So I've been moving more toward plotting mostly in polar stereographic meters. There is a suite of functions ending in "ps" that make this easy.

Rewrote the "AMT Getting Started" page and added the new circlesps function. Also, in previous versions plotps, pcolorps, etc all ended with "axis equal", but that has now been changed to setting aspect ratio via daspect.

V3: Addition of shadem function, which creates shaded relief (hillshade) images. Addition of find2drange function, which plugin functions will use to clip data to a region of interest. Improved documentation for scarlabel and scarclick functions.

قابل توجه مدیران نویسندگان وب سایت و وبلاگ ها!
كپی برداری از مطالب ترجمه شده و نشر بازنشر آن در وب سایت و وبلاگ ها به صورت متن کامل یا بخشی از آن شرعاً حرام بوده و گروه آسان دانلود هیچگونه رضایتی در این مورد ندارد.

Stereographic Suite is an exciting new software package designed to help the user easily and quickly create high-quality stereograms. Being based on sophisticated software architecture, the suite consists of three complementary programs.

The Office for Research, McCormick School of Engineering, Weinberg College of Arts and Sciences and the Materials Science and Engineering Department have jointly licensed the CrystalMaker Suite for use by all students, staff and faculty at Northwestern University.

"CrystalMaker is the most-efficient way to visualize crystal and molecular structures. Its interactive design lets you "see the wood for the trees" and build your own visual understanding of complex materials. CrystalMaker transcends traditional crystallography software, letting you create dynamical visualizations with rotatable animations. Energy-modelling tools let you design and relax new structures, predict their vibrational properties, and explore how they interface with other materials."

"CrystalDiffract brings the world of x-ray & neutron powder diffraction to your computer screen, with interactive control and easy characterization of your experimental data. Real-time parameter controls let you experiment with diffraction and sample settings, with instant feedback. Combine these with instant mixture creation - and the ability to load observed data in the same window - and you have a powerful workbench application for researchers, teachers and students."

"From the classroom to the laboratory to the synchrotron: SingleCrystal is the easiest way to visualize and understand diffraction properties of crystals. SingleCrystal lets you simulate X-ray, neutron and electron diffraction patterns from single crystals, display reciprocal lattice sections and construct stereographic projections of planes or vectors. By combining a simulated pattern with an observed diffraction image, you can auto-index the pattern and determine the orientation of your crystal."

The accompanying licenses only work with the files you are about to download. Older versions of the software and demo versions downloaded from the CrystalMaker site will not work with the licenses issued to Northwestern! This license will expire on 8/31/2022

Because graphics cards are supplied by third parties, you cannot rely on the Windows Software Update mechanism to do this - or your control panel. Instead, you should visit the graphics card manufacturer's website to download the latest drivers for your machine.

CrystalMaker X provides workstation-class performance through its highly-optimized multi-core design and advanced OpenGL support. As such, it is imperative that graphics drivers are kept fully up-to-date (particularly if your machine's operating system has been updated).

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