Python 索引器错误:打印时数组索引过多
嗨,当我尝试在matplotlib中绘制风时,我遇到以下错误 按照我的代码:Python 索引器错误:打印时数组索引过多,python,matplotlib,netcdf,Python,Matplotlib,Netcdf,嗨,当我尝试在matplotlib中绘制风时,我遇到以下错误 按照我的代码: from mpl_toolkits.basemap import Basemap, cm, shiftgrid, addcyclic import matplotlib.pyplot as plt from netCDF4 import * import numpy as np #-- open netcdf file nc = Dataset('/Users/Juan/Documents/python/20
from mpl_toolkits.basemap import Basemap, cm, shiftgrid, addcyclic
import matplotlib.pyplot as plt
from netCDF4 import *
import numpy as np
#-- open netcdf file
nc = Dataset('/Users/Juan/Documents/python/2017112900_2017113000_daily-ifremer-L3-MWF-GLO-20171201105757-01.0.nc', mode='r')
#-- read variable
var = nc.variables['wind_speed'][0,:,:]
u10 = nc.variables['eastward_wind'][0,:,:]
v10 = nc.variables['northward_wind'][0,:,:]
lat = nc.variables['latitude'][:]
lon = nc.variables['longitude'][:]
u, lonsout = addcyclic(u10, lon)
v, lonsout = addcyclic(v10, lon)
print "lon[0]: ", lonsout[0], "lon[-1]: ", lonsout[-1]
print "lat[0]: ", lat[0], "lat[-1]: ", lat[-1]
print lonsout[:]
print lat[:]
#-- create figure and axes instances
dpi = 100
fig = plt.figure(figsize=(1100/dpi, 1100/dpi), dpi=dpi)
ax = fig.add_axes([0.1,0.1,0.8,0.9])
#-- create map
map = Basemap(projection='cyl',llcrnrlat= -90.,urcrnrlat= 90.,\
resolution='c', llcrnrlon=-180.,urcrnrlon=180.)
#-- draw coastlines, state and country boundaries, edge of map
map.drawcoastlines()
map.drawstates()
map.drawcountries()
#-- create and draw meridians and parallels grid lines
map.drawparallels(np.arange( -90., 90.,30.),labels=[1,0,0,0],fontsize=10)
map.drawmeridians(np.arange(-180.,180.,30.),labels=[0,0,0,1],fontsize=10)
#-- convert latitude/longitude values to plot x/y values
#x, y = map(*np.meshgrid(lon,lat))
x, y = map(lon,lat)
#-- contour levels
clevs = np.arange(210,320,5)
#-- draw filled contours
cnplot = map.contourf(x,y,var,clevs,cmap=plt.cm.jet)
#-- add colorbar
cbar = map.colorbar(cnplot,location='bottom',pad="10%") #-- pad: distance between map and colorbar
cbar.set_label('deg K') #-- add colorbar title string
#-- transform vector and coordinate data
veclon = u10.shape[1]/2 #-- only every 2nd vector
veclat = u10.shape[0]/2 #-- only every 2nd vector
uproj,vproj,xx,yy = map.transform_vector(u,v,lonsout,lat,veclon,veclat,returnxy=True,masked=True)
#-- create vector plot on map
vecplot = map.quiver(xx,yy,uproj,vproj,scale=600)
qk = plt.quiverkey(vecplot, 0.2, -0.2, 20, '20 m/s', labelpos='W') #-- position and reference label.
#-- add plot title
plt.title('Winds')
#-- display on screen
#plt.show()
运行整个程序后,我收到错误消息:
**IndexError: too many indices for array
IndexErrorTraceback (most recent call last)
<ipython-input-31-d5f74a5df99a> in <module>()
----> 1 cnplot = map.contourf(x,y,var,clevs,cmap=plt.cm.jet)
/Users/Juan/anaconda/lib/python2.7/site-packages/mpl_toolkits/basemap/__init__.pyc in with_transform(self, x, y, data, *args, **kwargs)
534 # convert lat/lon coords to map projection coords.
535 x, y = self(x,y)
--> 536 return plotfunc(self,x,y,data,*args,**kwargs)
537 return with_transform
538
/Users/Juan/anaconda/lib/python2.7/site-packages/mpl_toolkits/basemap/__init__.pyc in contourf(self, x, y, data, *args, **kwargs)
3631 # only do this check for global projections.
3632 if self.projection in _cylproj + _pseudocyl:
-> 3633 xx = x[x.shape[0]//2,:]
3634 condition = (xx >= self.xmin) & (xx <= self.xmax)
3635 xl = xx.compress(condition).tolist()
IndexError: too many indices for array**
**索引器错误:数组的索引太多
IndexErrorTraceback(最近一次调用last)
在()
---->1 cnplot=map.contourf(x、y、var、clevs、cmap=plt.cm.jet)
/Users/Juan/anaconda/lib/python2.7/site packages/mpl_工具包/basemap/__init__;.pyc与_转换(self、x、y、data、*args、**kwargs)
534#将lat/lon坐标转换为地图投影坐标。
535x,y=self(x,y)
-->536返回plotfunc(self、x、y、data、*args、**kwargs)
537带_变换的返回
538
/contourf中的Users/Juan/anaconda/lib/python2.7/site packages/mpl_工具包/basemap/__init__;.pyc(self、x、y、data、*args、**kwargs)
3631#仅检查全球预测。
3632如果自投影在_cylproj+_pseudocyl中:
->3633 xx=x[x.shape[0]//2,:]
3634条件=(xx>=self.xmin)和(xx变量风速
有4个维度,ncdump-h
:
短风速(时间、深度、纬度、经度)
将其解读为:
var = nc.variables['wind_speed'][0,:,:]
剩下的是三维空间:深度、纬度、经度
,这对于轮廓f()
来说太多了
cnplot = map.contourf(x, y, var[0,:,:], clevs, cmap=plt.cm.jet)
感谢没有起作用,…cnplot=map.tourtf(x,y,var[0,:,:,:,:,:],clevs,cmap=plt.cm.jet)索引器:数组索引器的索引太多回溯(最近一次调用)在()1--->2 cnplot=map.tourtf(x,y,var[0,:,,:,:,:],clevs,cmap=plt.cm.jet)/Users/Juan/anaconda/lib/python2.7/site-packages/numpy/ma/core.pyc在u getitem中__(self,indx)3218#如果尚未正确设置被重塑的掩码3219#因此更容易坚持当前版本您的var
有3个维度;键入var[0,:,:,:,:]
将给出“索引太多”错误,因为只有3个维度,而不是4个维度。它应该是var[0,:,:,:,:]
再次感谢巴特…我无法获取:我想绘制风矢量,我使用了一个脚本示例,其中包含另一个变量,我用风速替换了它,但不起作用……。>>>cnplot=map.tourtf(x,y,var[0,:,:,:],clevs,cmap=plt.cm.jet)索引器:在()--->1 cnplot=map.contourf(x,y,var[0,:,:,:],clevs,cmap=plt.cm.jet)/Users/Juan/anaconda/lib/python2.7/site packages/mpl_工具包/basemap/u init_uuuuu.pyc in with_transform(self,x,y,data,*args,**kwargs)亲爱的Bart,你能试着用我的数据集运行脚本吗?啊,Basemap希望x
和y
数组是2D的,所以你需要再次包含x,y=map(*np.meshgrid(lon,lat))
的部分,然后当我设置不同的clev
()