[英]rpy2 fails to import 'rgl' R package
要加載請檢查rgl
軟件包,rgl
軟件包是否已從python
安裝在R
,我將結合以下兩個問題中給出的配方:
這是我匯總的MWE:
from rpy2.rinterface import RRuntimeError
from rpy2.robjects.packages import importr
utils = importr('utils')
def importr_tryhard(packname, contriburl):
try:
if packname == 'rlg':
rgl = importr("rgl", robject_translations = {".rgl.abclines": "_rgl_abclines2"})
else:
rpack = importr(packname)
print 'success'
except RRuntimeError:
print 'no pack'
rpack = 'none'
return rpack
packname = 'rgl'
contriburl = 'http://cran.stat.ucla.edu/'
importr_tryhard(packname, contriburl)
上面的代碼不斷失敗,並顯示以下錯誤:
rpy2.robjects.packages.LibraryError: Conflict when converting R symbol in the package "rgl" to a Python symbol (rgl.abclines -> rgl_abclines while there is already rgl_abclines)
根據此問題開頭鏈接的第二個問題給出的答案,該行如下:
rgl = importr("rgl", robject_translations = {".rgl.abclines": "_rgl_abclines2"})
應該注意這個錯誤,但是顯然不是。
我在這里做錯了什么?
編輯
Spacedman在下面的評論使我意識到上面的原始問題有錯別字( if packname == 'rlg'
應該是if packname == 'rgl'
)。 更正了這種錯字,我可以使代碼正常工作,如下所示:
from rpy2.rinterface import RRuntimeError
from rpy2.robjects.packages import importr
utils = importr('utils')
def importr_tryhard(packname, contriburl):
try:
if packname == 'rgl':
rpack = importr("rgl", robject_translations = {"rgl.abclines": "rgl_abclines2",
"rgl.attrib": "rgl_attrib2", "rgl.attrib.count": "rgl_attrib_count2",
"rgl.bbox": "rgl_bbox2", "rgl.bg": "rgl_bg2", "rgl.clear": "rgl_clear2",
"rgl.dev.list": "rgl_dev_list2", "rgl.getcolorcount": "rgl_getcolorcount2",
"rgl.getmaterial": "rgl_getmaterial2", "rgl.ids": "rgl_ids2",
"rgl.init": "rgl_init2", "rgl.light": "rgl_light2", "rgl.material": "rgl_material2",
"rgl.pixels": "rgl_pixels2", "rgl.planes": "rgl_planes2", "rgl.pop": "rgl_pop2",
"rgl.postscript": "rgl_postscript2", "rgl.primitive": "rgl_primitive2",
"rgl.quit": "rgl_quit2", "rgl.selectstate": "rgl_selectstate2",
"rgl.setMouseCallbacks": "rgl_setMouseCallbacks2", "rgl.setselectstate": "rgl_setselectstate2",
"rgl.snapshot": "rgl_snapshot2", "rgl.spheres": "rgl_spheres2", "rgl.sprites": "rgl_sprites2",
"rgl.surface": "rgl_surface2", "rgl.texts": "rgl_texts2", "rgl.user2window": "rgl_user2window2",
"rgl.viewpoint": "rgl_viewpoint2", "rgl.window2user": "rgl_window2user2"})
else:
rpack = importr(packname)
print 'success'
except RRuntimeError:
print 'no pack'
rpack = 'none'
return rpack
packname = 'rgl'
contriburl = 'http://cran.stat.ucla.edu/'
importr_tryhard(packname, contriburl)
因此它確實有效,但是卻非常麻煩和丑陋。 我建議使用我在下面的答案中發布的代碼,這是檢查已安裝軟件包的更好的方法。
謝謝Spacedman!
你不能那樣做。 rgl軟件包需要OpenGL設備,但是在rpy2范圍內運行更像是無頭運行。
幾乎可以肯定,您並沒有修復所有創建錯誤的符號。 就rgl
,有很多,因此可以考慮使用替代名稱轉換規則來構建字典。
例如,更改'.' -> '_'
'.' -> '_'
到'.' -> '__'
'.' -> '__'
:
from rpy2.robjects.packages import importr
base = importr('base')
base.library('rgl')
env = base.asNamespace('rgl')
d = dict()
for k in env:
if '.' in k:
new_k = k.replace('.', '__')
d[k] = new_k
rgl = importr("rgl", robject_translations=d)
我將Dirk的答案標記為已接受,因為他是對的。 盡管如此,我還是在這里發布自己的答案,以說明如何解決此問題。
這是代碼:
from rpy2.robjects.packages import importr
utils = importr('utils')
def importr_tryhard():
contriburl = 'http://cran.stat.ucla.edu/'
try:
pack_lst = utils.installed_packages()
rpack = list(pack_lst.rx(True, 1))
except RRuntimeError:
rpack = []
return rpack
rpack = importr_tryhard()
print rpack
這將返回(存儲在rpack
) R
中所有可用軟件包的列表。
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