- Phiro'ng phap quan sat, do dac: Bang kinh nghiem ctia minh, ket hgp
a. Xdy dung md hinh sd ve phdn bd cdy cd thu
Tren co sd sd lieu toa do cay cd thu do bang thiet bj GPS tai thye dia, viec djnh vj cac cay cd thu len ban dd sd bang modul chuyen dung cita phan mem Microstation SE dugc tien hanh ti mi, than trgng. Tich hgp bin dd ket qui ni\ vdi ban dd nen dja ly se nhan dugc md hinh sd \ e phan bd ca\ cd thu. Quy trinh cdng nghe ctia qui trinh nay quy djnh theo thtr ty sau;
1) Chuyen ddi toa do dja ly (B,L) ctia cac cay cd thu sang toa do De-cic (X,Y) vdi he toa do VN 2000, kinh tuyen trung uong 105 , inui 6^, ludi chieu WGS-84: sir dtjng chuang trinh tinh chuyen GEOTOOL 2.0 ctia Bd Tai nguyen va Mdi trudng ban hinh.
2) Xay dyng bin do sd ve phan bd khdng gian ctia cay cd thu: Nhap lan lugt toa do X, Y tirng cay cd thu theo khudn dang quy djrih ctia phan mem
Q I nenngo_rn nenphophu_rn phochinh_rri n nenphochinh_rri dailo_m D I nendailo_ri-i duongQH_m O nenQH %• /^vtj'i'..yt75 D l-ri014 n n0.15 c-long2 1 1 p-DG ngach F'-NENngo P-nenchinh P-nenphu n F-CQ TrHoc F ] B-rghuyen I T P-p'?op/}(.- f T C-,'}go T T /rt'.y.^TiT^' f r PphacW} STT A-i'hoy&'nT/nfjdo co D Style-3 f r S(^-4 %• S(m-^ f r LW D Style-8 r~| Normal Connector nenNga Tu I T i.Vit'A/C'^iWiT^-y
ITT i;!cMA':o/}g I net TT g^vchi{i--o/}gion TT g/whuKHdiSf) %• g,'wMiA-:h'doM %• gfmrJiukhadolfy n ngach p-NEN NGACH H Nen nghia dia • phophu_rn
Xdy dung Atlas cdy cd thu Hd Ndi •'"
Microstation SE. Chgn Cell TRGA.C trong thu vien dd chen cay vio, kem theo ghi chu TEXT dat trong level 63. Sd ctia ghi chti la thtr ty ctia cay trong danh muc khio sat thye dja vdi Font 214, miu do.
3) Tir ban dd sd nay tham chieu den cac file ctia ban dd ndn dia ly Ha Ndi ty le 1/25.000 va 1/50.000, luu gitr cac Workspace dudi dang cic md hinh sd vd sy phan bd khdng gian ctia cay cd thu theo cac mtrc do chi tidt khic nhau.
b. Chuyen ddi di~r lieu sd cua bdn do nen
Quy trinh cdng nghe chuyen ddi dtr lieu ban dd sd ctia bin dd ndn ttr dinh dang DGN ve djnh dang FHIO da ghi rd trong muc 111.2. Dd dim bao do chinh xic cLia viec djnh vi cay cd thy tren bin dd, can tham chidu toa do cic cay da do dac, khio sit ngoai nghiep len nen bin dd dja hinh, sau dd chuydn ddi ci ndi dung niy sang djnh dang chuan quy udc.
c. Bien tap bdn do
Viec bien tap ban dd chi tiet tuan thu theo quy dinh:
- Sir dyng mau bd cue da dugc Ban chu nhiem de tai phe duyet. - Sir dung mau chir da dugc phe duyet.
- Sir dung mau miu da dugc phe duyet. - Sir dung mau ky hieu da dugc phe duyet.
Qua trinh bien tap bin dd chi tiet can luu y cac van de sau:'
- Cic yeu td nen, net, text phai de dung layer, dting style theo cac Idp da dugc quy djnh.
- Cac ky hieu du Ijch, den chtia, benh vien, chg, trudng hgc, khach san... dugc xdp vao layer tuong irng. Rieng ky heu cum cay, hang cay va cay ddc lap thi
dugc xep vao layer Kihieu cay.
- Layer anh minh hoa la cic tranh anh dugc the hien tren ban dd, layer ghichukihieu cay chira cac thdng tin thudc tinh ve cay cd thu.
- Ddng vting cic ndn (nen ngoii; nen sdng; nen hd; nen sdng lien vdi hd deu
phai tao thanh / vimg (VD; ddi vdi sdng net ddi ndi vdi hd qua cira sdng thi vting
do se ddng thinh 1 vting chtr khdng phai la 2 vting nhu thdng thudng). - Ndn hanh chinh khdng phai ddng vting (de trang).
- Cac layer cd chu C dau la cac layer che mau trang, dting de the hien cac
ddi tugng tren nen mau khu vyc.
- Cac layer cd chtr F dau la layer nen mau, dting de phti mau cho cac contua
kin. Khi fill ndn mau khdng dugc cin kidm tra ngay tinh trang Join cua dudng vien. - Quy djnh mau trong cac layer ky hieu chinh nhu sau;
Xdy dimg Atlas cdy cd thu Hd Ndi "*
• Aldu do sen (100m): benh vien. uy ban nhdn ddn. • Mdu cam (65ml OOy): cdc dia vat dinh hudng khdc. • Mdu xanh(lOOe): cha, trirdng hoc.
• Mdu den(lOOk): Cdc ky hieu cdn lgi.
- Thuy he dugc the hien dudi dang sdng 1 net dugc sap xep theo cdc lap (layer) theo luc net ciia sdng. khdng de chung (da dugc phan Idp trong file mau).
- Ghi chti cay cd tht.i tren ban dd cd the xe djch, keo net chi vao ddi tugng sao cho khdng chdng de nhieu cic yeu td khic (tuy nhien khdng nen djch qua xa vi tri quy djnh).