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The workflow enables conversion of raw digitized coordinate points into a usable interactive database representation, capturing slope, slope length, elevation, and aspect angle. It details the required data processing software programs, mathematical derivations for UTM registration, and scale-factor considerations. Example results are demonstrated using Shiprock and Gallup quadrangle test data, with supporting tables and figures.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/a-method-for-the-processing-and-analysis-of-digital-terrain-elevation-data-report-177-january-1979/232754/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/a-method-for-the-processing-and-analysis-of-digital-terrain-elevation-data-report-177-january-1979/232754.png","ImageObject",300,407,{"name":92,"@type":93},"Putri","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-05","2026-09-10",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",12,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What outputs does the processing method generate from digital terrain elevation data?","Question",{"text":113,"@type":114},"The method prepares data for entry into an interactive database in the form of slope, slope length, elevation, and aspect angle.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"How does the report handle registration of raw digitized coordinates?",{"text":118,"@type":114},"It presents mathematical considerations for registering raw digitized coordinate points to the UTM coordinate system and derives the needed equations.",{"name":120,"@type":111,"acceptedAnswer":121},"What example datasets are used to illustrate processing and analysis results?",{"text":122,"@type":114},"Results are illustrated using Shiprock and Gallup quadrangle test data.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},232754,1789073489,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":140,"language":141,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":142,"faqs":143,"seo_title":144,"seo_description":67,"update_tm":130,"read_time":145,"preview_page_count":4},962085571259,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","N OTICE  \nTHIS DOCUMENT HAS BEEN REPRODUCED FROMMICROFICHE.ALTHOUGH IT IS RECOGNIZED THATCERTAIN PORTIONS ARE ILLEGIBLE,IT IS BEING RELEASEDIN THE INTEREST OF MAKING AVAILABLE AS MUCHINFORMATION AS POSSIBLE  \nNASA  \n8.1-10.0.30  \nm-9187  \nof eeriy ad内dis  \nt pf3h Resourc3$、vey  \nbn 2ad ho7t ity  \ne cnder SA spoorship  \nNational Aeronautics and Space Administration  \n0t.\"  \nEARTH RESOURCES LABORATORY  \nA METHOD FOR THE PROCESSINGAND ANALYSIS OF DIGITALTERRAIN ELEVATION DATA  \nJANUARY 1979  \nREPORT NO.177  \n(E81-10030)A METHOD FOR THE PROCESSING ANDANALYSIs OF DIGITAL TSRRAIN ELEVATION DATA(NASA)  85 p HC A05/MF A01CSCL 05B  \nN81-12512  \nUnclas  \nG3/43  00030  \nLIBRARY COPY  \nJAN311979  \nLANGLEY RESEARCH CENTERLIBRARY,NASAHAMPTON,VIRGINIA  \nA METHOD FOR THE PROCESSING AND ANALYSISQF DIGITAL TERRAIN ELEVATION DATA  \nby  \nBobby G.Junkin  \n彩蒙  \n06LOR      减TI0S  \nReport No.177  \nJanuary 1979  \nACKNOWLEIGEMENTS  \nAcknowledgement is made to Mrs.Jo Anne Forbes andMr.Gil Kerley of the Programming Group of the LockheedElectronics Company,Inc.,for their programming supportin the implenientation of the procedures presented in thispaper.  The NASA/ERL Land Applications Group also suppliedthe data tapes for the application examples shown herein.Acknowledgement is also made to Mrs.Helen Paul for typingthe manuscript.  \nw  \nA METHOD FOR THE PROCESSING AND ANALYSISOF DIGITAL TERRAIN ELEVATION DATA  \nBy Bobby G.Junkin*  \nSUMMARY  \nThis report presents a method for the processing andanalysis of、digital topography data that can subsequentlybe entered in an interactive data base iri the form of slope,slope length,elevation and aspect angle.  Included are adiscussion of the data source and specific descriptions ofthe data processing software programs.  In addition,themathematical considerations involved in the registration ofraw digitized coordinate points to the UTM coordinate systemare presented.  Scale factor considerations are also included.Results of the processing and analysis are illustrated usingthe Shiprock and Gallup Quadrangle test data.  \n*Earth Resources Laboratory,NASA/NSTL,Slidel1,Louisiana 70458  \nCONTENTS  \nPage  \nSection  \nSUMMARY. . . . . . .. . . . ………………………………………………………………iii  \nINTRODUCTION ... ... ... ………………………………………………………………1  \nDIGITAL TERRAIN ELEVATION DATA ………………………………………………………………1  \nDATA PROCESSING SOFTWARE DEVELOPMENT …………………………………………3  \nGeneral Program Functions ………………………………………………………………………3  \nSpecific Program Descriptions ………………………………………………………………3  \nMATHEMATICAL ANALYSIS. . . . . . ……………………………………………………5  \nUTM Coordinste Equations ……………………………………………………………………………  \nDerivation of Equations for Data Registration …………………7  \nScale Factor Equations …………………………………………………………………………………16  \nSlope, Slope Length, and Aspect Determination . …………16  \nRESULTS……………………………………………………………………………………………………………………………………19  \nShiprock and Gallup Quad Data ………………………………………………………………19  \nCONCLUDING REMARKS.... . . . ………………………………………………23  \nREFERENCES…………………………………………………………………………………………:26  \nAPPENDIX A  \nNASA/ERL DIGITAL TERRAIN TOPOGRAPHIC PROGRAMS. . . .A-1  \nAPPENDIX B  \nPROGRAM FLOW CHARTS . . . . .  \n. .. ………………………………B-1  \nAPPENDIX C  \n C-1  \nPROGRAM LISTINGS  \nAPPENDIX D  \nGENERAL INFORMATION CONCERNING DATA COURCE  \nD-1  \nr  \n一…ii  \nTable  \nI  \nII  \nIII  \nTABLES  \nPage  \nINPUT DATA FOR EXAMPLE SHOWN IN  \nFIGURE 10 . . ……………………………………………………………………………22  \nCOMPARISON OF ELEVATION VALUES FROM  \nMA? AND TOPO PROGRAM . …………………………………………24  \nUTM DIFFERENCES FOR KNOWN POSITIONS . . . 24  \nFigure  \n1  \n2  \n3  \n4  \n5  \n6  \n7  \n8  \n9  \n10  \nFIGURES  \nPage  \nExample of USGS 1:250,000-Scale Map…………………6  \nEast of Zone CM. ... .. ……………………………………8  \nWest of Zone CM ……………………………………………………………………………9  \nEast of Zone CM,Right Side of Quad …………………11  \nEast of Zone CM,Left Side of Quad …………………13  \nWest of Zone CM,Right Side of Quad……………14  \nWest of Zone CM,Left Side of Quad ………………15  \nNeighborhood Cell Approach ………………………………………17  \nShiprock and Gallup Quad Data, RCC 135 .. 20  \nExample ","cbCainV9DTCuVFAI","https://ap.wps.com/l/cbCainV9DTCuVFAI","pdf",5500893,87,"English","# Summary\n# Introduction\n# Digital Terrain Elevation Data\n# Data Processing Software Development\n## General Program Functions\n## Specific Program Descriptions\n# Mathematical Analysis\n## UTM Coordinate Equations\n## Derivation of Equations for Data Registration\n## Scale Factor Equations\n## Slope, Slope Length, and Aspect Determination\n# Results\n## Shiprock and Gallup Quad Data\n# Concluding Remarks\n# References\n# Appendix A\n# Appendix B\n# Appendix C\n# Appendix D","[{\"question\":\"What outputs does the processing method generate from digital terrain elevation data?\",\"answer\":\"The method prepares data for entry into an interactive database in the form of slope, slope length, elevation, and aspect angle.\"},{\"question\":\"How does the report handle registration of raw digitized coordinates?\",\"answer\":\"It presents mathematical considerations for registering raw digitized coordinate points to the UTM coordinate system and derives the needed equations.\"},{\"question\":\"What example datasets are used to illustrate processing and analysis results?\",\"answer\":\"Results are illustrated using Shiprock and Gallup quadrangle test data.\"}]","A METHOD FOR THE PROCESSING AND ANALYSIS OF DIGITAL TERRAIN ELEVATION DATA - Report 177 - January 1979 | PDF",219]