About Landsat 8

Landsat 8 was launched February 11, 2013, and contains two sensors. One collects 8-band multispectral imagery at 30-meter resolution as well as panchromatic imagery at 15 meters. The other collects thermal imagery at 100-meter resolution. The orbit of the satellite results in its capturing 170-by-185-kilometer sized scenes along

a predefined path that returns to the same location every 16 days.

Ref:

,Esri News

for Map, Chart & Data Production Summer 2014

دستور IF اکسل و روش دومارتن

استفاده از IF های تودرتوی Excel، در بحث تصمیگیری ها، باعث افزایش دقت و سرعت می گردد، لذا این یاداشت را نوشتم همراه با یک مثال موردی یعنی کاربرد روش دومارتن  درپهنه بندی اقلیمی .

در مجموع روش کار با IF های تودرتو در تمام مطالعات مشابه است فقط عناوین کلاس ها و یا معیارها تغییر می کنند.

دانلود مثال

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کتابی در رابطه با پایان نامه نویسی

دانلود کتاب(به زبان انگلیسی- حدود 1.9 مگا)

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معرفی Whitebox Geospatial Analysis Tools

1. Whitebox GAT now contains over 370 tools for performing advanced geospatial analysis, many of which are relevant for the field of geomorphometry. 
2. Whitebox is open-source and transparent software. The concept of software transparency that has guided the development of Whitebox is a very novel contribution and improvement over traditional open-source development strategies that we hope will encourage an active development community. Imagine using a GIS for a specific application or teaching. You may use a certain tool and wonder, 'how exactly does this work?' You might first try the help documentation, but it may not be detailed enough (i.e. down to the level of the implemented algorithm) to give you the information you desire. Now image that you could press a single button that is on the tool's dialog box and it would bring you to the very page in the enormous library of the GIS packages code that is the tool's algorithm. Even better, imagine that you then had the capability to translate the code from its original source file into a programming language that you can read! That's exactly what transparent software is all about.

جزئیات بیشتر در سایت WhiteBox

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معرفی کتاب

مشاهده پروفیل طولی و مشخصات شیب مسیر در Google Earth

ابتدا مسیر مورد نظر را ترسیم (Add Path) و سپس در فهرست Places روی نام لایه Right Click نموده و گزینه Show Elevation Profile را انتخاب کنید

.

ارتباط SDI با GIS

SDI is an innovation that is underpinned by many GIS 

concepts and technologies, as well as the phenomenon of the Internet and related 

telecommunications and network technology (Chan, 2001).

SPOT 6

SPOT 6 Now Commercially Available

Launched in September 2012, SPOT 6 is the newest member of the SPOT family of satellites  to be commercially available. SPOT 6 is an earth observation satellite offering a   

  resolution of 1.5 meters with a wide 60km swath.  for more information

 

http://www.astrium-geo.com 

 

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RS در بین 10 تکنولوژی تاپ سال 2013

Clearinghouse چیست؟

Clearinghouse از مهمترین اجزای زیر ساخت داده های مکانی (SDI) است. در منابع فارسی معادل آن مرکز تبادل داده  بیان شده  است اما FGDC آن را چنین تعریف کرده است:

A spatial data clearinghouse can be defined (rather verbosely) as "the creation of a centralized or decentralized (distributed) electronically connected network of servers located on the Internet, which contain metadata and detailed catalogue services that are collected in a standard format to facilitate query and consistent presentation across multiple participating sites that band together spatial data providers, custodians and distributors to promote their available digital spatial data and enable all users to search relevant spatial data nodes, determine what spatial data exist, find the data they need, evaluate the usefulness of the spatial data for their applications and obtain or order the data as quickly and economically as possible" (FGDC, 1995).

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آموزش انگلیسی

 آنهائی که در آموزش زبان انگلیسی کمک لازم دارند این نرم افزار را از سایت زیر دانلود کنند. 

http://hafezeyar.blogfa.com 

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معرفی یک کتاب

 

9500تومان

درباره GeoRover

ورتکس و یک Application مخصوص اتوکد

در محیط اتوکد با این Application به راحتی می توانید ورتکس اضافه یا حذف کنید. 

 دانلود

کتاب Erdas

معرفی یک کتاب

یک-جمله

Technology is easy but management is difficult

 This was an observation by an eminent scientist during the Earth Observation Systems Forum deliberations at the recently concluded Geospatial World Forum 2012.l.

معرفی نرم افزار

یک مبدل فایل های اتوکد بنام 

Acme CAD Converter Key Features Batch conversion of multiple files such as DWG DXF DWF into PDF, PLT(HPGL), SVG, EPS, CGM, BMP, JPEG, TIFF, PCX, WMF, PNG without the need of AutoCAD. Merge multiple DWG, DXF, DWF files into a PDF file. Conversion of files according to an apponited ratio: This software could identify and guarantee the precise output size of each page layout by means of automatically adjusting the corresponding page layout sizes. Supports user-designed watermark. Batch recover DWG, DXF files. Batch pack DWG, DXF, DWF files and related source files (fronts, external blocks, figures) into the appointed Zip compressed files or folders. Particular unfound font replacement function could help you get over the fonts hunting trouble. The current version supports AutoCAD R2.5-R2012 drawing file format (DWG, DXF,DWF)

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برخی جملات خواندنی و پرمعنی