uDig, farko da ra'ayi

Mun riga mun dubi wasu kayan aiki kafin. Bude tushen A cikin GIS yankin, a cikinsu qgis da kuma gvSIG, banda  Shirye-shirye marasa kyauta Mun yi kokari kafin. A wannan yanayin zamu yi shi da GIS na Intanet Gidan Lantarki mai amfani da Mai amfani (uDig), Daya daga cikin wadanda zuwa a PortableGIS.

Daga ina taso

UDig ne gine-gine Sakamakon bincike, Wanda bayan ya lashe babban kyautar da aka ba da shi GeoConnections, sun saka hannun jari a cikin wannan da sauran ci gaban. UDig lasisi ne a ƙarƙashin GNU LGPL, kamfani ɗin shi ne haɗin ci gaban PostGIS Kuma muhimmiyar gudummawar ga Geoserver.

Ayyukan

Yana da ci gaba mai ban sha'awa, watsar da manyan tarurruka na kayan gargajiya, tare da fuska irin su qgis.  Daga cikin halaye zamu iya ambaci:

• Gina a Java, a ƙarƙashin yanayin Eclipse (Kamar yadda gvSIG)
• Da 'yancin saita da ke dubawa ne enviable, kasancewa iya ja windows kusan ko ina, kashe a bango, waje da kuma ciki ja, don rage girman mashiga kuma da yardar kaina gyaggyarawa gefuna Frames.
• Kisa gudun ne sosai kyau (duk da ana game da Java, Na i da ɗanɗanar daga Acer gurin DayaTare da Windows XP). Yana gudanar a kan Linux da Mac, a fili da mafi alhẽri yi.
• Kamar yadda na karanta vector Formats shi yana da iyaka ga mai hankali fayiloli (ba karanta DGN, KML, dxf ko dwg) amma wadanda aka sha (gml, xml) sune. Wanda kawai yake gargajiya shine yake karantawa shine siffar fayil.
• Raster images ma yana da nasa gazawa, amma za ka iya tsaya wa WMS ayyuka da kuma sauran ayyuka na kan layi.
• Kamar yadda bayanai kanta ne sturdy, ArcSDE, DB2, MySQL, Oracle sarari PostgreSQL/ PostGIS da WFS, don haka yin amfani da wasu daga cikin wadannan za a iya hade vector data ba isa conventionally.
• Grid, sandar sikelin, da almara suna haɗe kamar suna yadudduka. Wannan yana da ban sha'awa saboda ba ayyukan aikin kewaya bane amma na bayanan ne. Kodayake tsarin sa yana da ɗan rikitarwa (farko kwaikwayo)
• Yana yana da siffofin da cewa yin shi m, kamar:
  -kwafin / manna de fasaloli (kamar yadda da yawa GIS) 
  -Paste kamar yadda xml en allon rubutu
  -symbology sosai m batu, tare da fadakarwa kauce wa matsalolin da colorblind, Crt zaune a yanki, projectors, LCD zaune a yanki, launi bugu da photocopying.
• Abin sha'awa, kayan aikin yawanci yakan zo tare da kyakkyawan tsari, wanda ya haɗa da ƙungiyar Kanada da kuma tushen duniya na birane, ƙasashe, lokutan lokaci, da hotunan tauraron ɗan adam. Wannan dabarar tana da kyau sosai don fahimtar iyawarsa a lokacin ganinta a karo na farko, wani abu da sauran shirye-shiryen da suke zazzagewa, girkawa da kuma samar da babbar tambaya ya kamata suyi la'akari da su:Kuma yanzu cewa **** na yi tare da waɗannan maballin?
• Duba abubuwan sabuntawa akan layi wani fasali ne mai sauki wanda yakamata sauran ayyukan suyi la'akari dashi. A cikin wannan, ya ɗan yi kama da gvSIG, akwai shinge a cikin ra'ayi na farko, kuma wannan shine cewa dukiyar da ke cikin kari ba ta da isassun tallace-tallace ko kuma ba ta da madaidaiciyar zaren da ke inganta amfaninta (kuma a wannan yanayin matsayin hukuma). Aƙalla, tare da wannan sabuntawar kan layi (wanda ba shi da gvSIG), bayan fewan mintoci kaɗan na zazzagewa zan iya ganin yawancin damar da take karɓa a cikin haɓakar Grass, JGrass, GASKIYA, Horton Machine Kuma Axios a aikace-aikace na ruwaye, siffofin 3D, GPS, raser da kuma hulɗar hulda.

disadvantages

uDig yana yin abubuwa masu ban sha'awa, kamar qGIS an haɗa shi tare da JGrass, amma a matsayin mafita GIS Shin, ba shine kayan aiki mafi mahimmanci ba, Game da ayyukan gine-gine na fasaha da kuma kula da topology, qgis (Tare da kariyarsa ta kawo) kuma gvSIG (ba tare da kari ba). Duk da yake ya balaga, kuma yana da abin da mai amfani na yau da kullun zai buƙaci, ƙarfinsa shine ga mai amfani da damar haɓaka Java; hankalin ku internet GIS Yana da hankali don haɗi da bayanai da bincika sabuntawa amma har zuwa wallafe-wallafen yana da kaɗan don bayar da (Geoserver does). 

Lee-tsaren 'yan CAD / GIS, An ba su yi nasara a hadawa da al'umma matakin gvSIG, Kuma a cikin wannan mai amfani da bukatar da kuma dabarun ƙawance ne wani muhimmin engine gudun ci gaba, wani al'amari da cewa ba ze za a cimma nasara a cikin gvSIG (a matakin Kanada, amma ba a duniya).

gaskiyar hutu makircinsu Yana sa ka rasa wasu maki, kamar yadda masu amfani da yawa suka zama marasa iko a farkon (a cikin gudanar da ayyukan, kasidu da kuma ra'ayoyin).  Recovers wadannan maki Don sauƙi Wanda ya riga ya san yadda yake aiki, kodayake a cikin falsafanci na daidaitawa Java dole ne mu kula da ma'auni don daidaitattun bayanan kari (wanda ke da hankali) ba ya dubi (a cikin juyin halittarsa) zuwa bishiyar Kirsimeti Ga abin da yake rataye da yawa na figurines cewa wata rana muna rasa, ko jituwa, ko alama, ko lokaci.

Ba a san haka sosai ba Babban hasara (abin da ke faruwa ga mutane da yawa), kasancewa mafita ga ƙungiyar zaɓa ba garantin dogon lokaci, ba a aikace ba Bude tushen; Saboda haka, kadan Tsarin tsarin Daga kwarewa da Takardun, kodayake yarjejeniyarta don yin sabbin shawarwari abin birgewa ne. Ga karamar hukuma, uDig na iya zama maganin aiki sosai, amma samun goyan baya da horo na iya zama Matsalar ƘungiyaFar daga British Columbia); Yana da yafi m domin gudanar da ayyukan wannan zai ƙunshi keɓancewa da kuma cewa za su sami kasafin kudin don tallafawa (misali, yanayin, yanayin rashin lafiyar). 

Baya ga aikin dankali Peru da kuma rahoton Axios, kadan da aka ji daga uDig a Hispanic yanayi. da ci gaba da irin wannan mafita a kasar matakin ya dogara da aikace-aikace manufofin hijirarsa zuwa free software, wani topic da cewa shi ne sosai m a Latin America.

Babban hasara na gani ne uDig dorewa cikin dogon lokaciGaskiyar na zama wani kayan aiki da goyan bayan mai zaman kansa kamfanin da muka haifar da shakku a cikin tambayoyi kamar:

• Abin da idan Refractions Research ce a ranar da cewa shi ne unsustainable halin kaka ci gaba da goyon baya da kuma ci gaba, wanda zai?
• Iya ta taimakawa al'umma halitta mai tsauri duniya girma, idan akwai wani high bukatar?
• Shin ba akwai sauran ayyuka a kan Java / Eclipse cewa aikata wannan, su ne Open Source, Wanne alama don ninka ƙoƙarin?
• Shin ba ze ze kayan aikin kyauta ne dabarun kamfanonin da suka bar tallafi ba?

Tabbatar cewa mara Bude yana da amsoshi masu kyau a sama, amma bai isa ya yi tunani game da ci gaba ba, wanda a kanta yana da wuya a cikin ayyukan kyauta, domin idan muka raba bangarori na fasaha da fasaha waɗanda suke son aiki a fili, batun kudi Shin mai yiwuwa ne a cikin dogon lokaci. A yau muna rayuwa ne a lokacin da guguwa ta rushe tsarin tattalin arzikin duniya, a Takalma A cikin taron zai iya haifar da yakin cewa a rana ɗaya ƙare tare da kyakkyawan alamu, ɓaɗar jakar da ke ƙasa da karɓa ya sa manyan kamfanoni su tafi jahannama a kasa da awa daya.

Wadannan abubuwa, muna samun su yi tunanin cewa da irin wannan zangon (kuma a da shi ne don haka) na hanyoyin samarwa mutum cikakken yanci, watsuwa na kokarin da kudi yana cikin hadari (saboda a karshe hakan yana kashewa). 'Yanci na iya zama da yawa har wata rana ana iya amfani da shi don yin watsi da ayyukan saboda yanke shawara da wasu suka yi waɗanda ba waɗanda suka kafa tunanin asali ba. Dangane da wannan, tabbas da yawa sun riga sun rubuta, amma dole ne mu ci gaba da tunani a hankali, muna tuna cewa wata rana za a auna saka hannun jari ta hanyar tasiri ba ta geofumada ba.

ƙarshe

• Kamar yadda ci gaba: sosai robust da kuma m, sauran ayyukan kamata koyi ra'ayoyi a nan.
• Kamar yadda bayani yana babbar gazawar lokacin da idan aka kwatanta da sauran matakin (a farko bugu)
• Kamar yadda aikin ke tafiya sosai jinkirin da ba ze cikin sauri.
• Kamar yadda ka tafi a kan gwajin da kari, za mu iya ba ka da maki cewa Naira Miliyan Xari bayan farko da ra'ayi.