soheilred's profile - activity

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2016-04-27 07:22:23 -0500	received badge	● Famous Question (source)
2016-03-04 03:46:09 -0500	commented answer	Data Acquisition DAQ Hardware? A solution for the problem that I have addressed is to design an op-amp circuit to.... But, that circuit will not work as good as a prepared package like NI Instruments DAQ cards.
2016-03-04 03:39:04 -0500	commented answer	Data Acquisition DAQ Hardware? In noisy environments, Arduinos don't work well. But these boards are more robust against noise. In addition, for many applications, such as controlling an industrial ac motor, we need to provide a voltage range in [-10,+10], which is impossible to generate with Arduino.
2016-01-07 09:04:06 -0500	received badge	● Commentator
2016-01-07 09:04:06 -0500	commented answer	increasing rosserial's publishing rate for Arduino Thank you for your answer.
2016-01-05 02:57:48 -0500	commented answer	Eigen libriary does not work the problem is for Eclipse. I shifted to Qt and everything works fine.
2016-01-05 00:09:05 -0500	received badge	● Famous Question (source)
2016-01-04 08:34:06 -0500	received badge	● Notable Question (source)
2016-01-04 07:14:02 -0500	commented answer	increasing rosserial's publishing rate for Arduino Thank you for your answer. It is written in the website that "RoNeX sends and receives data packets 1,000 times a second, consistently, all the time." Does it mean that no matter how many sensor we connect, it will publish the data in rate of 1 Khz?
2016-01-04 04:18:12 -0500	received badge	● Popular Question (source)
2016-01-04 00:44:52 -0500	commented question	increasing rosserial's publishing rate for Arduino I edited the title, which seems is not shown in the changes.
2016-01-03 21:45:28 -0500	received badge	● Editor (source)
2016-01-03 20:56:43 -0500	asked a question	increasing rosserial's publishing rate for Arduino Hello everyone, I'm using ROS to control my cable-robot. I use Arduinos to create communication between ROS and sensors and actuators. But, frequency of rosserial_python node is low (120 hz) and because of that the system is not controlled well. Is there any other nodes or boards that I can use for my project? Thank you in advance,
2015-08-18 20:58:29 -0500	commented answer	Eigen libriary does not work .... (nbRows<=MaxRowsAtCompileTime)) && (!(ColsAtCompileTime==Dynamic && MaxColsAtCompileTime!=Dynamic) \|\| (nbCols<=MaxColsAtCompileTime)) && nbRows>=0 && nbCols>=0 && "Invalid sizes when resizing a matrix or array."' failed.
2015-08-18 20:56:57 -0500	commented answer	Eigen libriary does not work It seems that problem has not been solved completely. When I could include the library into my code, I built my node without any problem. But now, when I want to run my node, I get this error: CRControl1: /usr/include/eigen3/Eigen/src/Core/PlainObjectBase.h:238: void Eigen::PlainObjectBase
2015-08-13 01:31:34 -0500	received badge	● Notable Question (source)
2015-08-13 00:24:54 -0500	received badge	● Enthusiast
2015-08-12 20:19:31 -0500	commented answer	Eigen libriary does not work the problem solved. you were right Simon. The inclusion command was not true. But, actually I cannot understand what's wrong with my Eclipse. I used this feature without any problem. But it seams that it cannot handle this library correctly. do you have any idea about the problem?
2015-08-12 06:07:33 -0500	commented answer	Eigen libriary does not work this is what Eclipse auto-completion gives to me. Otherwise, it shows the line with a red line beneath it as an error: `Unresolved inclusion error`
2015-08-12 05:58:35 -0500	received badge	● Popular Question (source)
2015-08-12 03:49:34 -0500	commented answer	Eigen libriary does not work thank you for your quick answer. but it still does not work. These things are happening even before I define any matrix or vectors. I get the error when I write the include line.
2015-08-12 03:45:41 -0500	received badge	● Scholar (source)
2015-08-12 02:21:32 -0500	asked a question	Eigen libriary does not work hi guys, I am working on Indigo installed on Ubuntu 14.04. I want to use Eigen library in my code. I used this tutorial to add the library to my codes. I also checked this one. After following these two tutorials, my `package.xml` contains: `<build_depend>cmake_modules</build_depend> <run_depend>cmake_modules</run_depend>` and my `CMakeLists.txt` has these lines: `find_package(catkin REQUIRED COMPONENTS cmake_modules ) find_package(Eigen REQUIRED) catkin_package( INCLUDE_DIRS include LIBRARIES talker1 CATKIN_DEPENDS roscpp rospy std_msgs geometry_msgs nav_msgs tf cmake_modules DEPENDS Eigen ) add_executable(CRControl1 src/CRControl1.cpp) add_dependencies(CRControl1 beginner_tutorials_generate_messages_cpp) target_link_libraries(CRControl1 ${catkin_LIBRARIES} ${EIGEN_LIBRARIES})` But unfortunately, non of them worked. when I am trying to compile, I get this error: /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:52:40: error: ‘RowMajorBit’ was not declared in this scope Options = MatrixType::Options & ~RowMajorBit, // these are the options for the TmpMatrixType, we need a ColMajor matrix here! In file included from /home/soheil/catkin_ws/src/talker1/src/CRControl1.h:31:0, from /home/soheil/catkin_ws/src/talker1/src/CRControl1.cpp:1: /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:58:22: error: expected nested-name-specifier before ‘NumTraits’ typedef typename NumTraits<typename MatrixType::Scalar>::Real RealScalar; ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:58:22: error: expected ‘;’ at end of member declaration /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:58:31: error: expected unqualified-id before ‘<’ token typedef typename NumTraits<typename MatrixType::Scalar>::Real RealScalar; ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:60:13: error: ‘Matrix’ does not name a type typedef Matrix<Scalar, RowsAtCompileTime, 1, Options, MaxRowsAtCompileTime, 1> TmpMatrixType; ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:62:13: error: ‘Transpositions’ does not name a type typedef Transpositions<RowsAtCompileTime, MaxRowsAtCompileTime> TranspositionType; ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:63:13: error: ‘PermutationMatrix’ does not name a type typedef PermutationMatrix<RowsAtCompileTime, MaxRowsAtCompileTime> PermutationType; ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:125:18: error: ‘TranspositionType’ does not name a type inline const TranspositionType& transpositionsP() const ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:132:12: error: ‘Diagonal’ does not name a type inline Diagonal<const MatrixType> vectorD() const ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:175:18: error: ‘solve_retval’ in namespace ‘Eigen::internal’ does not name a type inline const internal::solve_retval<LDLT, Rhs> ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:194:23: error: ‘MatrixBase’ has not been declared bool solveInPlace(MatrixBase<Derived> &bAndX) const; ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:194:33: error: expected ‘,’ or ‘...’ before ‘<’ token bool solveInPlace(MatrixBase<Derived> &bAndX) const; ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:199:28: error: ‘MatrixBase’ does not name a type LDLT& rankUpdate(const MatrixBase<Derived>& w, const RealScalar& alpha=1); ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:199:38: error: expected ‘,’ or ‘...’ before ‘<’ token LDLT& rankUpdate(const MatrixBase<Derived>& w, const RealScalar& alpha=1); ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:221:5: error: ‘ComputationInfo’ does not name a type ComputationInfo info() const ^ /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:236:5: error ... (more)
2015-08-11 22:54:43 -0500	commented answer	eigenConfig.cmake not found (ROS Indigo) I have the same problem. I did all the steps that you have mentioned. but when I compile my code I get this: /usr/include/eigen3/Eigen/src/Cholesky/LDLT.h:52:40: error: ‘RowMajorBit’ was not declared in this scope Options = MatrixType::Options & ~RowMajorBit, this is not the whole error
2013-09-29 00:15:47 -0500	received badge	● Supporter (source)