sr0主题的文章列表，还有sr0的技术要点_第2页

MySQL Error number: 3711; Symbol: ER_SRS_ORGANIZATION_CANT_BE_EMPTY_OR_WHITESPACE; SQLSTATE: SR006

文档解释Errornumber:3711;Symbol:ER_SRS_ORGANIZATION_CANT_BE_EMPTY_OR_WHITESPACE;SQLSTATE:SR006Message:Theorganizationnamecan’tbeanemptystringorstartorendwithw...

IT技术学习 ·2023-06-25

MySQL Error number: 4105; Symbol: ER_SRS_INVALID_LATITUDE_OF_ORIGIN; SQLSTATE: SR002

文档解释Errornumber:4105;Symbol:ER_SRS_INVALID_LATITUDE_OF_ORIGIN;SQLSTATE:SR002Message:Latitudeoforiginmustbewithin[-90,90]degrees,specifiedintheSRSangularunit.错误说...

IT技术学习 ·2023-06-25

MySQL Error number: 3736; Symbol: ER_SRS_GEOGCS_INVALID_AXES; SQLSTATE: SR002

文档解释Errornumber:3736;Symbol:ER_SRS_GEOGCS_INVALID_AXES;SQLSTATE:SR002Message:ThespatialreferencesystemdefinitionforSRID%uspecifiesinvalidgeographicaxes‘%s...

IT技术学习 ·2023-06-21

MySQL Error number: 4124; Symbol: ER_SRS_INVALID_HEIGHT; SQLSTATE: SR002

文档解释Errornumber:4124;Symbol:ER_SRS_INVALID_HEIGHT;SQLSTATE:SR002Message:Heightparametermustbenonnegative.错误说明：ER_SRS_INVALID_HEIGHT错误表明在某个SpatialReferenceSystem...

IT技术学习 ·2023-06-20

MySQL Error number: 3714; Symbol: ER_CANT_MODIFY_SRID_0; SQLSTATE: SR000

文档解释Errornumber:3714;Symbol:ER_CANT_MODIFY_SRID_0;SQLSTATE:SR000Message:SRID0isnotmodifiable.左右错误说明MySQL错误3714（ER_CANT_MODIFY_SRID_0）是一个基本错误，表明不能在SRID（空间参考ID）0中...

IT技术学习 ·2023-06-20

MySQL Error number: 4106; Symbol: ER_SRS_INVALID_LONGITUDE_OF_ORIGIN; SQLSTATE: SR002

文档解释Errornumber:4106;Symbol:ER_SRS_INVALID_LONGITUDE_OF_ORIGIN;SQLSTATE:SR002Message:Longitudeoforiginmustbewithin(-180,180]degrees,specifiedintheSRSangularunit...

IT技术学习 ·2023-06-20

MySQL Error number: 3740; Symbol: ER_SRS_INVALID_PRIME_MERIDIAN; SQLSTATE: SR002

文档解释Errornumber:3740;Symbol:ER_SRS_INVALID_PRIME_MERIDIAN;SQLSTATE:SR002Message:Theprimemeridianmustbewithin(-180,180]degrees,specifiedintheSRSangularunit.（答案可参...

IT技术学习 ·2023-06-20

MySQL Error number: 3718; Symbol: ER_SRS_ATTRIBUTE_STRING_TOO_LONG; SQLSTATE: SR006

文档解释Errornumber:3718;Symbol:ER_SRS_ATTRIBUTE_STRING_TOO_LONG;SQLSTATE:SR006Message:Attribute%sistoolong.Themaximumlengthis%ucharacters.错误说明：ER_SRS_ATTRIBUTE_STR...

IT技术学习 ·2023-06-17

MySQL Error number: 4126; Symbol: ER_SRS_INVALID_ZONE_WIDTH; SQLSTATE: SR002

文档解释Errornumber:4126;Symbol:ER_SRS_INVALID_ZONE_WIDTH;SQLSTATE:SR002Message:Zonewidthparametermustbeanintegerbetween1-60.错误说明：ER_SRS_INVALID_ZONE_WIDTH的错误代码为412...

IT技术学习 ·2023-06-17

MySQL Error number: 3517; Symbol: ER_SRS_PARSE_ERROR; SQLSTATE: SR002

文档解释Errornumber:3517;Symbol:ER_SRS_PARSE_ERROR;SQLSTATE:SR002Message:Can’tparsethespatialreferencesystemdefinitionofSRID%u.错误说明ER_SRS_PARSE_ERROR，又称MySQL报...

IT技术学习 ·2023-06-17

Raspberry Pi 超声波(HC-SR04)

2019-11-2621:37:49树莓派3B(HC-SR04)超声波测距模块电阻1KΩ，2KΩ各一个杜邦线，面包板关于HC-SR04HC-SR04模块的测距为3cm-4m，精确度可达3mm。改模块包括超声波发射器、超声波接收器和控制电路三部分。A、引脚4个：VCCTRIGECHOGNDB、工作原理1、采用IO口TRI...

代码星球 ·2020-12-26

stm32与HC-SR04超声波传感器测距

首先，先来看一下这个模块的基本功能和原理。HC-SR04超声波测距模块可提供2cm-400cm的非接触式距离感测功能，测距精度可达高到3mm；模块包括超声波发射器、接收器与控制电路。像智能小车的测距以及转向，或是一些项目中，常常会用到。智能小车测距可以及时发现前方的障碍物，使智能小车可以及时转向，避开障碍物。注意是5v...

代码星球 ·2020-04-17

Linux下的/dev/sr0、/dev/cdrom、df命令、free命令

/dev/sr0是光驱的设备名，/dev/cdrom代表光驱cdrom是sr0的软链接.你ll/dev/cdrom和ll/dev/sr0看看显示用df命令查看磁盘驱动器当前的可用空间，用free显示当前可用内存 ...

代码星球 ·2020-04-08