请问如何用GrADS将海平面高度计的nc文件可视化

qqwqwqw

如题，急求

ljchen1989

都有dat文件了，自己改一个ctl，用grads画图呗
matlab画图比较复杂~

央哥儿

nc文件也有不同的属性，有一类nc文件grads可以直接读取，其他则需要转成dat文件再配合ctl描述文件

qqwqwqw

谢谢大家，谢谢大家

ljchen1989

海表面高度计？是指aviso卫星高度计么？
似乎不是标准nc格式
推荐用matlab重写成二进制无格式数据，配合ctl，再用grads画图~

ljchen1989

或者直接用matlab画图也行~~

qqwqwqw

央哥儿 发表于 2017-2-13 11:38
nc文件也有不同的属性，有一类nc文件grads可以直接读取，其他则需要转成dat文件再配合ctl描述文件

一下是说明信息，可否告知这个类型如何可视化

<class 'netCDF4._netCDF4.Dataset'>
root group (NETCDF3_CLASSIC data model, file format NETCDF3):
    Conventions: CF-1.6
    Metadata_Conventions: Unidata Dataset Discovery v1.0
    cdm_data_type: Swath
    comment: Sea Level Anomalies referenced to the [1993, 2012] period
    contact: servicedesk.cmems@mercator-ocean.eu
    creator_email: servicedesk.cmems@mercator-ocean.eu
    creator_name: CMEMS - Sea Level Thematic Assembly Center
    creator_url: http://marine.copernicus.eu
    date_created: 2014-03-25T13:47:48Z
    date_issued: 2014-01-06T00:00:00Z
    date_modified: 2015-11-10T14:16:14Z
    geospatial_lat_max: 78.989143
    geospatial_lat_min: -68.501746
    geospatial_lat_resolution: 0.107086
    geospatial_lat_units: degrees_north
    geospatial_lon_max: 359.948341
    geospatial_lon_min: 0.007778
    geospatial_lon_resolution: 0.032387
    geospatial_lon_units: degrees_east
    geospatial_vertical_max: 0.0
    geospatial_vertical_min: 0.0
    geospatial_vertical_positive: down
    geospatial_vertical_resolution: point
    geospatial_vertical_units: m
    history: 2014-03-25T13:47:48Z: created by DUACS DT - 2015-11-10T14:16:14Z: Change of some attributes
    institution: CLS, CNES
    keywords: Oceans > Ocean Topography > Sea Surface Height
    keywords_vocabulary: NetCDF COARDS Climate and Forecast Standard Names
    license: http://marine.copernicus.eu/web/27-service-commitments-and-licence.php
    platform: ERS-2
    processing_level: L3
    product_version: 5.0
    project: COPERNICUS MARINE ENVIRONMENT MONITORING SERVICE (CMEMS)
    references: http://marine.copernicus.eu
    source: ERS-2 measurements
    ssalto_duacs_comment: The reference mission used for the altimeter inter-calibration processing is Topex/Poseidon between 1993-01-01 and 2002-04-23, Jason-1 between 2002-04-24 and 2008-10-18, OSTM/Jason-2 until 2008-10-19.
    standard_name_vocabulary: NetCDF Climate and Forecast (CF) Metadata Convention Standard Name Table v28
    summary: Delayed-Time Level-3 sea surface height above Mean Sea Surface products.
    time_coverage_duration: P23H56M35.349747S
    time_coverage_end: 1995-05-16T23:56:36Z
    time_coverage_resolution: P1S
    time_coverage_start: 1995-05-16T00:00:01Z
    title: DT ERS-2 Global Ocean Along track Sea Level Anomalies L3 product
    dimensions(sizes): time(21109)
    variables(dimensions): float64 time(time), int32 longitude(time), int32 latitude(time), int16 cycle(time), int16 track(time), int16 SLA(time)
    groups:

qqwqwqw

ljchen1989 发表于 2017-2-12 19:22
海表面高度计？是指aviso卫星高度计么？
似乎不是标准nc格式
推荐用matlab重写成二进制无格式数据，配合c ...

对的 能说的详细点吗 最近还挺着急  非常感谢！！！

qqwqwqw

ljchen1989 发表于 2017-2-12 19:23
或者直接用matlab画图也行~~

能不能告诉一下详细的操作方法  非常感谢

ljchen1989

详细操作~
ncread读数据，fwrite写数据~
酱紫行么？

qqwqwqw

ljchen1989 发表于 2017-2-14 18:55
详细操作~
ncread读数据，fwrite写数据~
酱紫行么？

酱紫不行